Hallar, the Firefletcher [Dominaria Promos]

$0.50
Type: MTG Single
Title
Set: Dominaria Promos
Type: Legendary Creature — Elf Archer
Rarity: Uncommon
Cost: {1}{R}{G}
Trample
Whenever you cast a spell, if that spell was kicked, put a +1/+1 counter on Hallar, the Firefletcher, then Hallar deals damage equal to the number of +1/+1 counters on it to each opponent.