Frontline Medic

Cascade, cascade
Call Forth the Tempest deals damage to each creature your opponents control equal to the total mana value of other spells you've cast this turn.

Battalion — Whenever this creature and at least two other creatures attack, creatures you control gain indestructible until end of turn.
Sacrifice this creature: Counter target spell with {X} in its mana cost unless its controller pays {3}.

Battalion — Whenever Frontline Medic and at least two other creatures attack, creatures you control are indestructible this turn.\r
Sacrifice Frontline Medic: Counter target spell with {X} in its mana cost unless its controller pays {3}.

"The world is full enough of hurts and mischances without wars to multiply them."

Tales of Middle-earth Commander

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 {X} in its mana cost unless its controller pays {3}.