Well, it kinda makes sense that if you're gonna want huge power and gigantic attack ranges, you've gotta use up another two to four monsters!
Besides, the experience isn't split between fusion and magichanged monsters, everyone gets the base amount. So it's like levelling a bunch of characters at once!
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"Duel audio? You mean like rap battles?" - termina_rzident
KrahenProphet and Kana are on opposite ends of the Awesome Spectrum.