Vanquish Soul Calamity Caesar X TRAP Counter When an opponent's Spell/Trap Card, or monster effect, is activated that targets a card(s) you control, while you control a "Vanquish Soul" monster: Negate the activation, and if you do, destroy that card, then you can inflict damage to your opponent equal to the ATK of 1 "Vanquish Soul" monster you control
Illusion and Spellcaster Synchro Monsters you control gain 500 ATK, also they cannot be destroyed by your opponent's card effects
So it turns out, when compared to their regular counterparts, Black & White s arent so different in power-level from the original s

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Then, aside from all that value, your opponent is staring down a 7/7 with trample, plus whatever else you've cast for free
Library is easier to kill, only available in green and slower to come down than Divining Top