Waves of Aggression

Bracket

• B1 Exhibition — allowed: No restriction at this bracket
• B2 Core — allowed: No restriction at this bracket
• B3 Upgraded — allowed: No restriction at this bracket
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• No Game Changer, mass land denial, extra turn, tutor or two-card combo

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

48 known combos.

• Kirri, Talented Sprout + Waves of Aggression + Savage Ventmaw
  Produces: Infinite combat phases, Infinite green mana, Infinite magecraft triggers
  View on Commander Spellbook
• Waves of Aggression + Savage Ventmaw + Sword of Light and Shadow + Dryad Arbor
  Produces: Infinite combat damage, Infinite combat phases, Infinite green mana
  View on Commander Spellbook
• Treasury Thrull + Waves of Aggression + Dryad Arbor
  Produces: Infinite combat phases, Infinite magecraft triggers, Infinite self-discard triggers
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2008-08-01 · Wizards of the Coast
  A retrace card cast from your graveyard follows the normal timing rules for its card type.
• 2008-08-01 · Wizards of the Coast
  Casting a card by using its retrace ability works just like casting any other spell, with two exceptions: You're casting it from your graveyard rather than your hand, and you must discard a land card in addition to any other costs.
• 2008-08-01 · Wizards of the Coast
  Waves of Aggression untaps all creatures that attacked this turn, not just those that attacked during the most recent combat phase.
• 2008-08-01 · Wizards of the Coast
  If it's somehow not a main phase when Waves of Aggression resolves, all it does is untap all creatures that attacked that turn. No new phases are created.
• 2008-08-01 · Wizards of the Coast
  When a retrace card you cast from your graveyard resolves, fails to resolve, or is countered, it's put back into your graveyard. You may use the retrace ability to cast it again.
• 2008-08-01 · Wizards of the Coast
  If the active player casts a spell that has retrace, that player may cast that card again after it resolves, before another player can remove the card from the graveyard. The active player has priority after the spell resolves, so they can immediately cast a new spell. Since casting a card with retrace from the graveyard moves that card onto the stack, no one else would have the chance to affect it while it's still in the graveyard.

Rulings: Scryfall · Wizards of the Coast