Leph, Bloodline Slayer

Deathtouch, First strike, Lifelink
At the beginning of your upkeep, put a bounty counter on target creature an opponent controls. For as long as that creature has a bounty counter on it, it has "this creature must block if able."
Pay 8 life, {r/w}{r/w}: Leph, Bloodline Slayer gains indestructible until the beginning of your next turn.