Streambed Aquitects

{T}: Target Merfolk creature gets +1/+1 and gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.) {T}: Target land becomes an Island until end of turn.

"We look in the river and see scattered stones. A merrow looks and sees a map of Lorwyn." —Illulia, flamekin soulstoke