Sand Pirate Ship

During your attack phase you can attach as many creatures to the Sand Pirate ship.
Flying, Plainswalk
{t}: Attack with Sand Pirate Ship. Its power
and toughness are equal to the combined power
and toughness of attached creatures. Creatures
do not untap your next untap, but the Sand Pirate Ship does.
If Sand Pirate Ship is destroyed, bury it and all attached cards.