Call for Unity [Aether Revolt]

Set:	Aether Revolt
Type:	Enchantment
Rarity:	Rare
Cost:	{3}{W}{W}

Revolt — At the beginning of your end step, if a permanent you controlled left the battlefield this turn, put a unity counter on Call for Unity.
Creatures you control get +1/+1 for each unity counter on Call for Unity. The "leaking spire" stands for liberation from Consulate control.