最凶の魔王ラハール is a Weiß Schwarz card from 魔界戦記ディスガイア DG/S02-052. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When this card attacks, if 「通りすがりの魔王」 is in the climax slot, during this turn, this card gets +3000 Power and gains the following ability. 『【AUTO】 When the card battling this character becomes REVERSE, you may deal 1 damage to your opponent.』(Damage can be cancelled) 【AUTO】 ENCORE [Discard 1 Character to Waiting Room from hand] (When this card is placed in Waiting Room from Stage, you may pay the cost. If you do, return this card in REST to its previous slot.)
This card was printed in Japanese only; the English text above is an unofficial community translation.