Hallar, the Firefletcher + Triumph of the Hordes Combo

Hallar on the battlefield.

Triumph of the Hordes and Spell with Kicker or Multikicker in hand.

Hallar has a number of +1/+1 counters on it equal to or greater than 9 minus the smallest number of poison counters an opponent has. You have enough mana to cast the spell with kicker or multikicker, and there are legal target(s) for that spell, if applicable.

available

Cast Triumph of the Hordes by paying

Cast the spell with kicker or multikicker by paying its mana cost plus its kicker cost at least once.

Hallar triggers, putting a +1/+1 counter on it, then causing each opponent to get a number of poison counters equal to its power.

Each opponent loses the game.

Each opponent loses the game