Unbounded Colossus

Time Leap-/: 1 At the end of the battle that your vanguard attacked, if your drive check did not reveal any trigger units during that turn, you may pay the cost. If you do, choose one of your other rear-guards, and time leap it. (Bind it, call a grade +1 card from your deck, and shuffle your deck. At the end of the turn, put the called unit on the bottom of your deck, and call the bound card)