CotW Contest #511: I could make better use of that.

Mob's Outrage
Sorcery
Gain control of up to X target creatures until end of turn, then creatures you control gain haste until end of turn.
~ deals damage equal to the number of creatures you control to target creature or planeswalker.
"Give a man a target, and he will fight for ten times his own strength." - Nadrek Kapolus, insurrection leader

Changing entry because my original definitely didn't feel like a Yoink.



Note: Adding to my instant creature designs with this one. Important note is that in order to cast one, it needs to have a valid target, like all instants. Unlike other instants, it will resolve onto the battlefield as a part of the spell's resolution. Since instants can't exist on the battlefield, once it resolve onto it, it will no longer be an instant. It is, however, both an instant card and a creature card while in hand, grave, exile, or library. While on the stack, it is both an instant spell and a creature spell. The "you" in its dies trigger is the last controller of it (so most likely whoever's spell you stole). Reference to Black Market Connections.

Overcharm of Passion 
Instant
Multikicker (You may pay an additional any number of times as you cast this spell.)
Choose X. For each time this spell was kicked, you may choose the same mode up to one additional time—
• Overcharm of Passion deals 2 damage to target creature or planeswalker.
• Destroy target artifact with mana value of X or less.
• Target player gains control of target permanent with mana value of X or less until end of turn. Untap that permanent. It gains haste until end of turn.
• Target creature gets +1/+0 and gains first strike and trample until end of turn.

With how much I love taking control of stuff, I can't believe how long it took me to make an entry. Here goes nothing: