Causality Dragon, Crucial Dragon

[CONT](RC)/(GC):If your opponent's drive check or damage check revealed a trigger unit this turn, this unit gets [Power] +10000/[Shield] +10000. [AUTO](RC)[1/turn]:When this unit attacks a vanguard while not boosted, [COST][put another rear-guard in the same column as this unit into soul], and perform all of the following. ・Choose one of your opponent's rear-guards, retire it, and this unit gets [Power] +5000 until end of turn. ・[COST][Remove a [Over] trigger from drop], and your opponent cannot call grade 1 or greater cards from hand to (GC) until end of that battle.