Bestow {7}{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 to a creature.)

Eidolon of Endless Victory’s bestow cost is reduced by {1} for each other enchantment you control.

Eidolon of Endless Victory and enchanted creature each get +1/+1 for each enchantment you control.