Kha'Zix, the Voidreaver

Devoid (This card has no color.)
Whenever Khazix kills a nontoken creature,
choose one that hasn't been chosen:
• Kha'Zix gains +1/+0 and first strike
• Kha'Zix gains lifelink
• Kha'Zix gains flying
{bull} Khazix gains "can't be blocked by creatures
with power 3 or less"