Heiko Yamazaki, the General is a uncommon Legendary Creature — Human Samurai card from Kamigawa: Neon Dynasty (NEO), collector number 146. Current market price: $0.22 (foil $0.31), TCGplayer market prices via Scryfall.
Trample Whenever a Samurai or Warrior you control attacks alone, you may cast target artifact card from your graveyard this turn.