Halimar Wavewatch is a common Creature — Merfolk Soldier card from The List (PLST), collector number ROE-72. Current market price: $0.17, TCGplayer market prices via Scryfall.
Level up {2} ({2}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-4 0/6 LEVEL 5+ 6/6 Islandwalk (This creature can't be blocked as long as defending player controls an Island.)