This commander lets you cantrip on an early turn, then return later as a permanent engine, which is a really strong play pattern in longer games
It's a very Commander-esque ability in hindsight, but the design team didn't even think of a Commander format at the time, and they wanted people to build decks around it, so it was intentionally a non-legendary creature so they could take multiple copies out on the battlefield

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With Fire-Type Pokmon, you often see powerful moves that require discarding energy in order to work
Sometimes youll get lucky and end up with ways of fixing your mana, like tri-coloured lands or an artifact that can generate mana of any colour, but, even then, you should only have one or two cards in that third colour