Swan Song [Commander 2016]

Swan Song [Commander 2016]Set: Commander 2016 Type: Instant Rarity: Rare Cost: {U} Counter target enchantment, instant, or sorcery spell. Its controller creates a 2 2 blue Bird creature token with flying. "The most enlightened mages create beauty from violence." Medomai the Ageless

Set: Magic 2011 Type: Creature — Bird Rarity: Rare Cost: {G} Flying

(It's an item with "Action - [4 Resource]

Set: Sun & Moon: Lost Thunder Type: Fairy Rarity: Secret Rare Retreat cost: Colorless

Set: Lorwyn Type: Sorcery Rarity: Rare Cost: {B} Target player reveals their hand

Set: Nintendo: Black Star Promos Type: Metal Rarity: Black Star Promo Retreat cost: Colorless

Deal 2 arcane damage to target hero

{2}{G}{G}{G}: Elf creatures you control get +3/+3 and gain trample until end of turn

Counter target spell

return it to its owner's hand

Set: Diamond & Pearl: Majestic Dawn Type: Fire Rarity: Rare Retreat cost: Colorless

Set: EX: Crystal Guardians Type: Metal Rarity: Holo Rare Retreat cost: Colorless

and what to do when either goes wrong