Ghostblade Eidolon 2W
Enchantment Creature — Spirit
Bestow 5W (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.)

Double strike (This creature deals both first-strike and regular combat damage.)

Enchanted creature gets +1/+1 and has double strike.