Natiaha, the Eternal Beep

Whenever Natiaha, the Eternal Beep enters the battlefield you may choose a creature type.
Creature spells of the chosen type cannot be cast
until your next upkeep.
Natiaha, the Eternal Beep cannot be blocked by creatures of the chosen type.
When Natiaha, the Eternal Beep deals damage
to a player, you may have her Explore.