Eidolon of Countless Battles

Enchantment Creature — Spirit{1}{W}{W}0/0

Bestow {2}{W}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) This creature and enchanted creature each get +1/+1 for each creature you control and +1/+1 for each Aura you control.

Colour identity White · Bestow

In short

Eidolon of Countless Battles has 3 listed printings; the most valuable is the printing from BNG at US$0.65 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.

Every Eidolon of Countless Battles printing