Combos Utilizing Sea-sq-s-Claim

you can change pponent's land to an island with sea's claim and then you will be able to attack with sea monster and slipstream eel

use sea's claim to opponent's land to make your segovian leviathan unblockable and also to enable dreamwinder to attack. you can also tap reef shaman to make opponent's land an island.

make your opponent's lands islands, then typhoon will deal a great amout of damage to them, and if they're non-blue, they can't play spells since they don't have the proper mana producing lands.

best in a merfolk deck...auto-islandwalk.

enchant opponent's land (making it an island) on turn one. play dandan on turn 2 for 4/1 attacker on turn 3

turn there land into a island for 1 blue now vieled serpent can attack!

turn the other players lands into islands then swing away