Interdimensional Dragon, Lost Age Dragon

(G Zone):If your vanguard is a grade 3 "Chronojet Dragon", and you did not get an Imaginary Gift this fight, [choose one or more cards from hand with the sum of their grades being 3 or greater, and discard them], and Stride this card on your from face down. Then, [turn a card from G zone with the same card name as this unit face up], and you get two Imaginary Gift:Force. :This unit's "when attack hits" effects activate even if the attack did not hit. :When this unit's attack hits a vanguard, choose one of your opponent's rear-guards, and your opponent puts that unit on the bottom of their deck.