For newer players, what that means is that if you tap a Forest for a mana you can get another Green mana, but if you tap something like a Watery Grave for a Blue mana, you can also get one Black mana for free
Similarly to the Seven Dwarfs, Madam Mim and Merlin show off how powerful certain character card combinations can be
Im sure that each ability listed could be especially good in specific deck strategies, and him being creature-type Human only adds to the power level, but you can also just play any deck that wants to cast a lot of spellsbe it creature spells or otherwise
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Final Fantasy 6, 7, 10, 14 were chosen as the respective games, with Terra, Cloud, Tidus, and Y'shtola leading each deck respectively
So, as you add scroll counters to Aretopolis, you either gain life equal to the number of scroll counters, or chaos add a counter and draw cards