Commandeer [Coldsnap] Naga Cleric whenever either of those creatures

whenever either of those creatures deals combat damage

put a -1/-1 counter on each creature

it gets +1/+1 until end of turn for each instance of exalted among permanents its controller controls

"The specimen seems to be broken

or enchantment

Commandeer [Coldsnap] Naga Cleric whenever either of those creaturesSet: Coldsnap Type: Instant Rarity: Rare Cost: {5}{U}{U} You may exile two blue cards from your hand rather than pay this spell's mana cost. Gain control of target noncreature spell. You may choose new targets for it. (If that spell is an artifact, enchantment, or planeswalker, the permanent enters the battlefield under your control.)