Cryptojack

Gain control of target creature an opponent
controls until end of turn. Untap that creature.
It gains haste until end of turn.
Propagate (As you cast this spell, you may tap a
number of untapped creatures you control equal to
this spell's converted mana cost. When you do, copy
it and you may choose a new target for the copy.
Repeat this process any number of times.)
"Mine."