Kirri triggers, returning a land card from your graveyard to the battlefield.
Cast
Waves of Aggression from your graveyard for its retrace cost by paying ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) and discarding a land card, causing you to untap all creatures that attacked this turn, and to get an additional combat and main phase after this one.
Repeat.
Results
Infinite combat phases.
Infinite green mana.
Infinite magecraft triggers.
Infinite red mana.
Infinite self-discard triggers.
Infinite storm count.
Metadata
In 8 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).