Relentless Assault

Mana cost: {2}{R}{R}
Type: Sorcery
Set: Eighth Edition #214★ (rare)

Untap all creatures that attacked this turn. After this main phase, there is an additional combat phase followed by an additional main phase.

Relentless Assault has 19 printings, first in Visions (1997). EDHREC ranks it #1,584 among Commander cards. It appears most in Krenko, Mob Boss decks (5,236 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: legal
pioneer: not legal
standard: not legal
brawl: legal

Public decks that run Relentless Assault

Arm for Battle - Commander Legends, led by Wyleth, Soul of Steel

Commanders that run Relentless Assault most

Deck counts from EDHREC.

Krenko, Mob Boss: 5,236 decks
Tovolar, Dire Overlord // Tovolar, the Midnight Scourge: 3,369 decks
Isshin, Two Heavens as One: 3,190 decks
Raph & Mikey, Troublemakers: 2,932 decks
Lightning, Army of One: 2,770 decks
Narset, Enlightened Master: 2,475 decks
Kaalia of the Vast: 2,454 decks
Gornog, the Red Reaper: 1,731 decks

Often played with Relentless Assault

Cards that show up in the same decks on EDHREC.

Rulings

2025-09-19: Relentless Assault creates an additional combat and main phase only if it resolves during a main phase.
2025-09-19: A creature that attacks each turn if able must attack only once that turn. It is not forced into each attack that turn. However, a creature that attacks each combat if able must attack again if it can.
2025-09-19: If you manage to cast this during a main phase of your opponent's turn, that opponent's creatures will untap and that opponent will be able to attack again. It will not allow you to attack during their turn.
2025-09-19: Abilities that trigger when a creature attacks, blocks, or is blocked will trigger during each combat that turn.