Regigigas, Titan of Might

Whenever you cast Regigigas, Titan of Might.
if you do not control five Legendary Elder Golem
creatures, return this card to your hand and search
you library and/or graveyard for a
Legendary Elder Golem card, put into play then shuffle your library.
Other Legendary Creatures you control get +0/+1
for each experience counter you have and have
Trample and Ward {3}