Realm Seekers is a rare Creature — Elf Scout card from Conspiracy (CNS), collector number 38. Current market price: $0.22 (foil $3.08), TCGplayer market prices via Scryfall.
This creature enters with X +1/+1 counters on it, where X is the total number of cards in all players' hands. {2}{G}, Remove a +1/+1 counter from this creature: Search your library for a land card, reveal it, put it into your hand, then shuffle.