Elspeth, Sun's Champion is a mythic Legendary Planeswalker — Elspeth card from Secret Lair Drop (SLD), collector number 1140. Current market price: $18.41 (foil $20.32), TCGplayer market prices via Scryfall.
+1: Create three 1/1 white Soldier creature tokens. −3: Destroy all creatures with power 4 or greater. −7: You get an emblem with "Creatures you control get +2/+2 and have flying."