The Chosen Undead

Converge - The Chosen Undead enters the battlefield with a +1/+1 counter on it for each
color of mana spent to cast it.
{1}{b}{b}: Regenerate The Chosen Undead.
At the beginning of each combat, The Chosen
Undead gains first strike until end of turn if you control a creature with first strike. The same is
true for double strike, haste, deathtouch,
lifelink, and reach.