Kain, Scion Of Balance

Menace, Regal & Bloodthirst 2 (If an opponent
was dealt damage this turn, this creature enters
the battlefield with two +1/+1 counters)
When this creature deals damage to a player, you
gain life equal to the damage it had dealt to them.
Behest {1}{r}{t} Target creature gains Dethrone
until end of turn. (When the creature attacks
the player with the most life or tied for most
life, the creature gets a +1/+1 counter)