Causality Dragon, Crucial Dragon

/:If your opponent's drive check or damage check revealed a trigger unit this turn, this unit gets +10000/ +10000. :When this unit attacks a vanguard while not boosted, [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 +5000 until end of turn. ・[Remove a [Over] trigger from drop], and your opponent cannot call grade 1 or greater cards from hand to until end of that battle.