Boreal Outrider - Kaldheim #163

Boreal Outrider

Set: Kaldheim (KHM)
Collector Number: 163
Type: Snow Creature — Elf Warrior
Rarity: Uncommon
Mana Value: 3.0

Whenever you cast a creature spell, if {S} of any of that spell's colors was spent to cast it, that creature enters with an additional +1/+1 counter on it. ({S} is mana from a snow source.)