Dandân

Dandân can't attack unless defending player controls an Island.
When you control no Islands, sacrifice Dandân.

Ensnare

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost.
Tap all creatures.

Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost.
Draw two cards.

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
Counter target spell unless its controller pays {1}.