If an effect allows you to spend mana "as though it were mana" of any color or type, that will allow you to spend mana you couldn't otherwise spend, but it won't change what mana you spent to cast the spell
If you want to build around merfolk because you picked up a Commander precon from The Lost Caverns of Ixalan or just want to learn more about one of Magics longest-running creature types, Ive got the best merfolk for your deckbuilding needs
All is Dust is second only to Ugin as a versatile, super-strong answer
One of my favourite things to do is grab this from Sunforger and await a responsemost of the time, there isnt one
It has similar advantages to cards like Yawgmoth's Will or Past in Flames when youre going off in a storm combo, and you can also mill yourself and win with Thassa's Oracle
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