Fortified war elephant

Trample
during your upkeep created one white 1/1 soldier creature token, one green 1/1 elf creature token, and one red 1/1 goblin creature token.
If this creature has Been on the battlefield for three of your upkeeps, shuffle it into your deck.
"During the war the alliance had lost many fortresses and now have to resort to mobile fortresses to survive."