+W, +!U, +!R, +"counter target", +spell, +!{U} (11)
Choose one —
• Prevent all combat damage that would be dealt this turn.
• Regenerate target creature.
• Counter target spell that targets you.
Enchant land
Enchanted land has ": Counter target spell if it would destroy a land you control."
Battalion — Whenever Frontline Medic and at least two other creatures attack, creatures you control gain indestructible until end of turn.
Sacrifice Frontline Medic: Counter target spell with in its mana cost unless its controller pays .
Counter target artifact or enchantment spell. Its controller gains life equal to its mana value.
Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.
When Mage's Attendant enters the battlefield, create a 1/1 blue Wizard creature token with ", Sacrifice this creature: Counter target noncreature spell unless its controller pays ."
Counter target spell unless its controller pays .
, Pay 1 life: Counter target black spell.
Counter target spell that targets a permanent you control.
Flying
Sacrifice Unyaro Griffin: Counter target red instant or sorcery spell.
Sacrifice Vigilant Martyr: Regenerate target creature.
, , Sacrifice Vigilant Martyr: Counter target spell that targets an enchantment.
Gatherer works better in the Companion app!