Nonbasic lands don't untap during their controllers' untap steps.

Put a flood counter on target land. That land is an Island in addition to its other types for as long as it has a flood counter on it. If you control a Merfolk, draw a card.

Enchant land As this Aura enters, choose a basic land type. Enchanted land is the chosen type.

Nonbasic lands are Islands.

{1}, {T}: Target land becomes the basic land type of your choice until end of turn.

Enchant land As this Aura enters, choose a basic land type. Enchanted land is the chosen type.

At the beginning of each player's upkeep, that player puts a flood counter on target non-Island land they control of their choice. That land is an Island for as long as it has a flood counter on it. At the beginning of each end step, if all lands on the battlefield are Islands, remove all flood counters from them.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever this creature attacks, you may exile target creature defending player controls until this creature leaves the battlefield. (That creature returns under its owner's control.)

Multikicker {1}{U} (You may pay an additional {1}{U} any number of times as you cast this spell.) Islandwalk (This creature can't be blocked as long as defending player controls an Island.) This creature enters with a +1/+1 counter on it for each time it was kicked.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) This creature can't attack unless there are five or more Islands on the battlefield.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) When this creature enters, look at the top four cards of your library, then put them back in any order.