Frontier Explorer [Mystery Booster Playtest Cards]Set: Mystery Booster Playtest Cards Type: Creature Cat Scout Rarity: Rare Cost: {W} {3}, {T}: Until end of turn, you may play one basic Plains card from outside the game. TEST CARD Not for constructed play

When you cast your commander

Set: Commander 2015 Type: Sorcery Rarity: Common Cost: {U} Scry 2

and it's returned from the battlefield to its owner's hand at the beginning of the next end step

Set: Diamond & Pearl: Secret Wonders Type: Water Rarity: Uncommon Retreat cost: Colorless

Set: Theros Type: Creature — Human Wizard Rarity: Rare Cost: {1}{U} Heroic — Whenever you cast a spell that targets Artisan of Forms

Set: Planechase Anthology Planes Type: Plane — Serra's Realm Rarity: Common When you planeswalk away from Sanctum of Serra

" —Vedalken research notes

caravan rear guard

(Whenever a Sliver deals combat damage to a player

" —Alera Benath

Set: Sun & Moon: Burning Shadows Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

Set: World Championship Decks 2003 Type: Instant Rarity: Uncommon Cost: {2}{U} Counter target spell unless its controller pays {1} for each card in your graveyard