Brash Taunter + Volcano Hellion + Pariah's Shield

Brash Taunter
Volcano Hellion
Pariah's Shield

Requires
Volcano Hellion in hand. All other permanents on the battlefield. Pariah's Shield attached to Brash Taunter. 2rr available.
Steps
  1. Cast Volcano Hellion by paying 2rr
  2. Volcano Hellion enters the battlefield, dealing an arbitrarily large amount of damage to Brash Taunter
  3. Brash Taunter triggers, dealing an arbitarily large amount of damage to target opponent
Results
Infinite damage to target opponent.