Tamiyo, Field Researcher is a mythic Legendary Planeswalker — Tamiyo card from Eldritch Moon (EMN), collector number 190. Current market price: $2.45 (foil $7.05), TCGplayer market prices via Scryfall.
+1: Choose up to two target creatures. Until your next turn, whenever either of those creatures deals combat damage, you draw a card. −2: Tap up to two target nonland permanents. They don't untap during their controller's next untap step. −7: Draw three cards. You get an emblem with "You may cast spells from your hand without paying their mana costs."