<bb> Merrith's Battle Board! [James Brafin]

Merrith pauses and turns beet-red. "Mages, I'm sorry. I had no idea." Looking at the young girl, he considers for a moment then shrugs. "If that's the case, would you like to travel with me for a while? I can always use the company, and I could make you Traveling Gear so that you could Worldwalk with me. Unless you can do that already, of course."

Merrith's Alliance 2UR
Enchantment (Uncommon)
As Merrith's Alliance enters the battlefied, you may destroy target artifact. If you don't, create a Rune token. It has “Sacrifice this permanent: Add 1 mana of any color. Use this mana only to cast instant and sorcery spells.”
UR: Up to two target creatures gain Hexproof and Haste until end of turn.

I do like Otherportal. It's a bit of a niche design space, and seems costed about right. 9/10

"That is intriguing, to say the least. What are your intentions to use it for?" Aeterna asks, amused by the man without a spark.

Runal Duplication: This card is very weak on its own without any support and you haven't made any runes this interaction. 4/10

Heretic Hunter

Creature-Human Soldier
When Heretic Hunter enters the battlefield, exile up to one target artifact.
2/2

8/10 for both cards. I really like both, each seems useful and flavorful.
EWBOP: 8/10 for Mass Production. 3/10 for Heretic Hunter, not because it's not a cool card (it is and I like it a lot) but because my spell was an enchantment. Heretic Hunter does nothing to remove the problem.

Merrith shrugged. "Right now it's just for me. I don't want this type of technology to fall into the hands of those who would use it for ill. I've always been curious about World-walking, and have always wanted to see the multiverse. It works by tearing a small hole in the World Barrier, the boundary between a universe and the Betweenlands - your term for it is the Blind Eternities, I think? - and allowing me to step through it. The mask provides oxygen so I can breathe, and my navigational device allows me to travel from location to location. The Betweenlands are a funny thing; my research indicates that space has no meaning there, so travel can be done almost instantaneously, simply by willing yourself to your destination. Then you just open up another hole and step through, or in my case, hurtle." He seems awfully pleased with his work as he puts the mask away again. "I can only assume that the both of you are planeswalkers?

Residuplicate
Instant 
Residuplicate costs  more to cast unless an artifact you controlled left the battlefield this turn.
Copy target spell. You may choose new targets for the copy, and may spend mana as though it were mana of any color to pay additional costs.

To be clear on what this is doing:
So my understanding is that Heretic Hunter enters the battlefield, targeting a Rune. In response, Mass Production creates a Heretic Hunter and a Runal Duplication, and maybe a Rune token as well. In response to that, I cast Residuplicate, which then creates a copy of MY Runal Duplication Heretic Hunter, and a Rune token. The Heretic Hunter then exiles the artifact that Mass Production theoretically made.

At one point, the explorer might have passed through a region teeming with life, where a woman in mud-tracked boots and a shopkeeper's dress and apron would have briefly glanced over, before carrying on with her harvest of the land. Then she would have had a double-take, as she made a mental note to track the explorer down at another time.

Now, the same woman approaches him, in another region altogether. "Good day. You've traveled far, for someone without an aether signature suggesting any spark. You also don't appear to be volarian, for you're harboring no aether within you. A tunnel would be out of the question. How have you done this, and what are you looking for?" She seems almost amused, though her gaze is intent.

Miserly Claim
Sorcery
Each opponent reveals their hand. You may put a land card from any player's hand onto the battlefield tapped under your control.

Without missing a beat, Merrith responds in kind. "Daetheniel. What is your code, soldier?" Then he pauses and blinks. "My bad. We have many of your kind back home. I am Merrith. Where are you from?"

I don't like this just because it's so reliant on what your opponent is doing. 5/10

Runeshield 
Artifact - Rune (Uncommon)
Artifact, Instant, and Sorcery spells cost  more to cast for each Artifact on the battlefield.

"A bit! How many tugs is it for more slack?" The woman laughs. "Does anyone know you're all the way out here? You must be very far from home- or is it more like a constitutional through the planes of existence, a walk in the park, before retiring to your fine estate?"

Bricklane Napper
Creature — Human Rogue 
Menace
Whenever Bricklane Napper deals combat damage to a player, you may sacrifice it. If you do, that player discards a card.
1/1

---

How embarrassing. I briefly forgot how to count card advantage. It swings two cards, not one, so 1BG would be more appropriate, or even 2BG.
Denied Knowledge — I'm all for pushing design boundaries, but unconditional hard counters are either multicolour or have two blue pips. Consider how despite Cancel has room for improvement, such as scry 1 or additional counter targets, Convolute, which only has less weight by one pip, is only a soft counter. Otherwise, point for having comparable payments that are paid in differently scaling costs with respect to game timing, as well as the twofold response. 6/10

(I can take care of all three of these at once lol)

Bricklane Napper is a solid 8/10. Not bad, but a touch on the weak side I think.
Curious Occurrence is 6/10, since it's really weak unless you cast it for its very expensive miracle cost. It's not terrible, but it doesn't even control what creatures it gets rid of.
Lost Architect is busted as HELL. 3/10

Merrith gives the woman a hollow chuckle. "Try an experimental walk before I return to my laboratory. It didn't turn out so well, I'm afraid. Now, do you have smoething to say or are you going to continue to patronize me?"
Then he glances at the two approaching. "Sorry, what was that? 'Fraid not, ma'am. I'm still not entirely sure where I am right this moment. The name's Merrith, by the way. Pleasure to meet you."

Runic Blast 
Instant 
As an additional cost to cast Runic Blast, sacrifice X Rune Tokens.
Runic Blast deals X damage to each creature.

(Sacrificing one of my MANY tokens at this point to do this.)

"O-oh, Miss Lettie! I, uh... yes, please... I would appreciate help returning to the bakery. I know h-how to get back to the outpost from there...

// Haia sets the drone on the ground in the direction it was leading her.
She waves it off with a brief sad look.

I'm not sure how many rune's you'll normally have floating around. Probably either far too many or far too few? 7/10

Guide to Safety
Instant
Prevent all damage that creatures would deal to target creature this turn.
Scry 1.

(Assisting Lettie)

@jamesbrafin

A one-armed women wielding a spear approaches you, looking around.  "You.  Name?" she asks bluntly.

Abrasive Mercenary
Creature - Human Warrior
When ~ enters the battlefield, target opponent loses 1 life and you gain 1 life.
"Just point me at them."
1/1

Lettie departs on foot for the benefit of Haia, and barely misses the new arrival.

---

You appear to have not posted a response to groundskeeper. In the meanwhile, please note that green bounces friendly permanents, for example, creatures as shown in this link, and even any permanent, as can be seen with Invasive Species, printed in M15. Friendly bounce is also present on white cards such as these, and on the flashback side of Saving Grasp. It is far from restricted to "a blue effect, and ONLY blue effect."