Djeru, With Eyes Open is a rare Legendary Creature — Human Warrior card from Hour of Devastation (HOU), collector number 10. Current market price: $0.34 (foil $1.10), TCGplayer market prices via Scryfall.
Vigilance When Djeru enters, you may search your library for a planeswalker card, reveal it, put it into your hand, then shuffle. If a source would deal damage to a planeswalker you control, prevent 1 of that damage.