Satanael, Divine Thief

Sinful Shell — Tap 3 Thieves you control. Exile
target permanent. If it's a commander, its tax increases an aditional {2}. This ability cannot be countered.
BlackViper — {5}, {t} Target creature takes 15
damage.
Riot Gun — {3}, {t} Satanael, Divine Thief deals 5 damage to all creatures an opponent controls.
Joker, The Trickster, takes 2 damage.
At the end of your turn, sacrafice Satanael,
Divine Thief.