Spell Bond {U/R} (You may pay the Spell Bond cost as you cast this spell using the color of mana opposite of what you used to cast this spell. You may choose a new target for the Spell Bond effect.)

If blue mana was spent to cast this spell, tap target creature and put a stun counter on it.

If red mana was spent to cast this spell, deal 2 damage to target creature. If a creature dies this way, exile it instead of putting it into its owners graveyard.