Merfolk water-mage

Seclude (at the beginning of your upkeep you may
exile this creature under an island you control or return
this creature from exile if it is secluded. If this creature
is the only creature exiled under an island it is
secluded. Other player's cannot activate this ability).
Whenever you cast an instant or sorcery spell
while this creature is secluded create a 1/1 blue
elemental creature token with ward {1}.
Ward {1}.