Idyllic Quarry

Bestow {1}{w}{u} (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.)
Enchanted creature gets +1/+1
Whenever an opponent casts a spell that targets only a single creature, change the target to Idyllic Quarry or enchanted creature if able.