Lightning Bolt, Chain Lightning, Lightning Helix, Flame Slash, Galvanic Discharge, and Unholy Heat keep creatures off the table and help close games
The combination of universal Fire Energy support, high base HP, and late-game nuking potential makes Mega Charizard X ex a central threat in Fire archetypes but now, this card also looks like it belongs on a first place medal as well as a binder
In OCG (excluding the difference between 'send to the graveyard' and 'abandon'), there is a higher compatibility called Gicheok
We decided to play Compulsory in the side (I say "we" because I built the deck with my teammate Diellor, who told me that compulsory could be a nice tech)
Based on casual play alone, Ob Nixilis is probably a $2 card, so the premium here tells me that some people believe that Ob might see play in Standard or Modern as well