Charnelhoard Wurm + Klauth, Unrivaled Ancient + Relentless Assault

Charnelhoard Wurm

Klauth, Unrivaled Ancient

Relentless Assault

How it works

1. Declare Charnelhoard Wurm and Klauth as attackers.
2. Klauth triggers, adding at least 8 that can only be spent to cast spells.
3. Deal combat damage to an opponent using Charnelhoard Wurm.
4. Charnelhoard Wurm triggers, returning Relentless Assault from your graveyard to your hand.
5. Cast Relentless Assault by paying 2, causing you to untap all creatures that attacked this turn and to get an additional combat and main phase after this one.
6. Repeat.

This ferocious loop leverages Klauth, Unrivaled Ancient's massive power-scaling mana generation to fuel an unending swarm of additional combat phases. When Klauth and Charnelhoard Wurm charge into battle together, Klauth supplies a tidal wave of restricted colored mana, while the Wurm connects with an opponent to recycle Relentless Assault directly from the graveyard back to your hand. Casting Relentless Assault then untaps both attackers so you can do it all over again, turning a single pair of dragons and wurms into an eternal sequence of devastating strikes.