Peema Aether-Seer is a uncommon Creature — Elf Druid card from Aetherdrift Commander (DRC), collector number 113. Current market price: $0.24, TCGplayer market prices via Scryfall.
When this creature enters, you get an amount of {E} (energy counters) equal to the greatest power among creatures you control. Pay {E}{E}{E}: Target creature blocks this turn if able.