Selvala, Heart of the Wilds (Borderless Textured Foil Frame Break) [Commander Masters] Secret Lair Drop Promos you may search your library

you may search your library for a legendary team-up creature

each opponent sacrifices a creature that dealt combat damage to you this turn

III — You may cast any number of spells from your hand without paying their mana costs

Set: March of the Machine Promos Type: Creature — Faerie Rogue Rarity: Rare Cost: {1}{U} Flash

and has "Whenever a player casts a spell or a creature attacks

Selvala, Heart of the Wilds (Borderless Textured Foil Frame Break) [Commander Masters] Secret Lair Drop Promos you may search your librarySet: Commander Masters Type: Legendary Creature Elf Scout Rarity: Mythic Cost: {1}{G}{G} Whenever another creature enters the battlefield, its controller may draw a card if its power is greater than each other creature's power. {G}, {T}: Add X mana in any combination of colors, where X is the greatest power among creatures you control.