Doing this unlocks Obelisk's ability to increase its attacking power to infinity and attack any number of monsters active on the field the duelist chooses, despite whose turn it is
The game expects you to ramp into this attack with cards like the Baby Pokmon (whose attack attaches Energy to your bench for free) and Ho-oh ex (whose attack generates exactly the three Energy types needed by Lugia), since the game's random Energy generation means that just being able to use it once without these effects is a pipe dream at best, and only getting it off a single time probably won't even win the game
I think, again, the size is maybe more noticeable in this one, and, again, we've got the whole card is foil
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Teppen Image Credits: GungHo Online First Japanese game on the list and a crossover between many of Capcoms famous franchises
This includes nine designs for the Paldea starters