Ancient Dragon, Tyrannoquake (BT17/S05EN) [Blazing Perdition ver.E]

[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.