Nemos, The Great Tide

CARDNAME enters the battlefield with X
+1/+1 counters.
Remove a counter from CARDNAME: put a
Flood counter on target non-basic land, it
becomes an island in addition to its other types.
Activate this ability only as sorcery.
Non-basic Islands you control have
"{t},sacrifice this land: search your library for a
basic land card, it enters the battlefield tapped"