<BB> rumal0's Battle Board [A floating speck]

With your investigative tools set up you begin your tests.

Foregoing excessive protective equipment you start out with some indirect tests. The results are slightly abnormal but not dangerous.

This confirmed you draw closer.

Procurring a tong you attempt to grab it. You feel resistance as you clamp down on the speck. Slightly squishy.

With a knife, you successfully cut of a tiny piece.

With the tongs you hold it over a flame and it seems to burn. The flame is bright and white.

Looking back to see if the speck has reacted to the cut you are unsurprised to see that the part you cut off has grown back.

You put you ear up to the speck.

It seems to be humming.


Persistent Presumptions
Enchantment
Whenever a card would be put on the bottom of its owners library instead put it on top of its owners library.
"It is said that reality often defies expectations. I've found that it just as often mimics them"

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gateways7
I'm a sucker for repeatable scry effects and your's reminds me of one of the first cards I ever owned, Crystal Ball, so I can't not like it. Also the potential fun with otherwise inert artifacts and enchantments is nice, and who doesn't want to be able to tap their enchantments when they finally get the chance! Had that been the only requirement for its activation I would probably have thought much too powerful in the right deck, but the cost on top I think is over correcting a bit (see aforementioned Crystal Ball for comparison). Still, scry is nice, the casting cost is fun, and the rarity seems correct.
8/10

The cleansing magic weaves through the air, vague bright strips moving out, around and in towards the speck. As they reach it, the speck dissolves like a smudge wiped from glass, and for a moment the air is crisp and clear as a sunny day in winter. 
Then, in the same place from which the speck was just wiped something grows out of the nothing. At first glance it seems to be the same speck as before, but looking closer its form is elongated. Is the top part maybe a bit thinner than the bottom?
The humming does not cease at any point, and seems to grow louder as the speck reforms.

(Rarity increase)

From Like Reformed 
Instant 
Exile target spell or permanent you own.
Then, reveal cards from the top of your library until you reveal a card that shares a type and converted mana cost with the exiled card. You may cast that card without paying its mana cost. Put the rest on the bottom of your library in any order.
"Beneath the bells and whistles, reality is consistent. Therefore, become deft at plucking bells from thin air, and plugging whistles in absent holes, so as to dress the consistent to your chime and tune."

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Nice to meet you too sylphiod
Simple enchantment removal costed correctly for it's rarity and speed. I can see this being sideboarded in a limited setting or happily played in any white kitchen table deck in a enchantment heavy playgroup. Also, I really like scry - 10/10

While before the humming was consistent and droning, now it follows a repeating pattern. Every few moments the pattern changes, a low sound becoming a high sound, a the time before the pattern repeats shortening or lengthening. Until finally it settles and as it does, so does a couple of other things around it.

A bird halts mid flight, it's wings still moving but unable to propel it further.

A light yelp sounds from a fox, the thoughts of squirrel meat chased away by panic as a squirrel escapes unhindered up a tree. 

And, aware of it or not, the construct too is obstructed. While the legs do seem to gain traction, and no specific part is fixed in place, some force restricts it from moving in any meaningful way.


Restrictive Interference
Enchantment 
As this card enters the battlefield chose a number.
Creatures with converted mana cost equal to that number can't attack or block.
"The world is like waves on water, and any complex wave can be seen as a combination of many simple waves. Restrict the amplitude of the strongest of those simple waves and the remaining whole becomes insignificant."

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shiftyhomunculus  -  that is a very nice attack, and also a very fine common. Nice as a piker in limited, and  while the ability is niche, it's relevant here. I'll say that is a 10/10

Wanting a piece of silence, Uil ruffles her feathers and an aura of silence envelopes her and the speck.

Peace of Night
Instant
Until end of turn, player's can't cast spells. Exile all cards in each player's graveyard.

Shares a type and converted mana feels a bit restrictive I'd personally like it as converted mana cost or less and state nonland in what it can target. all in all decent 7.5/10 Let's make it 8/10 since it's our first visit