So I have a grouping, all adjacent, of a dwarf cleric, dwarf defender, and a half orc thug. My opponent targets my half orc thug with his hobgoblin sorcerer with a ranged attack for 20. So the dwarf defender blocks 10 damage, then can I tap the dwarf cleric on my opponents turn to heal the other 10 damage???? Seems crazy if you could use the heal ability on your opponents turn, then again if you want on your turn. Thanks.