Teferi's Imp is a rare Creature — Imp card from Mirage (MIR), collector number 98. Current market price: $1.02, TCGplayer market prices via Scryfall.
Flying Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.) Whenever this creature phases out, discard a card. Whenever this creature phases in, draw a card.