Red Hulk + Boromir, Warden of the Tower + Screaming Nemesis

Red Hulk

Boromir, Warden of the Tower

Screaming Nemesis

How it works

1. Give Red Hulk and Screaming Nemesis indestructible using Boromir.
2. Deal damage to Red Hulk.
3. Red Hulk triggers, putting a +1/+1 counter on it and dealing damage to Screaming Nemesis.
4. Screaming Nemesis triggers, dealing damage to Red Hulk.
5. Repeat from step 3.

To pull off this explosive feedback loop, you first need to protect your key pieces using Boromir, Warden of the Tower so they can survive the impending crossfire. Once Boromir grants them indestructible, you deal initial damage to Red Hulk to kick off the chain reaction. Red Hulk's enrage ability triggers from the damage, placing a +1/+1 counter on itself and firing a bolt of damage directly into Screaming Nemesis. That incoming damage makes Screaming Nemesis trigger in turn, sending an equal amount of damage right back at Red Hulk to keep the cycle going.