Kuvira's Influence

Creatures you control have Menace.
Whenever a nontoken creature enters the battlefield under your control, create a 3/3 green
Wolf creature token with Trample and Menace.
{x}{r}: Gain control of target creature with power
X or less. Untap it. It gains haste. At the end of
turn, it deals damage to itself equal to its power
plus X.