Ancient Dragon, Tyrannoquake (RR+SP)

[ACT](VC): Legion20000 Ancient Dragon, Tyrannobite (If your opponent's vanguard is grade 3 or greater, this unit may return four cards from your drop zone into your deck once, search your deck for the specified card, and Legion)
[AUTO](VC):During your battle phase, when your rear-guard with the same name as a unit in your (VC) is put into the drop zone, if this unit is Legion, this unit gets [Power]+5000/[Critical]+1 until end of turn. This ability cannot be used for the rest of that turn.
[AUTO](VC):[Choose one of your rear-guards, and retire it] When this unit attacks a vanguard, you may pay the cost. If you do, this unit gets [Power]+5000 until end of that battle.