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
That said, Fynn is still an interesting commander that offers some interesting lines and rewards those that plan several turns out
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In fact, the average price of a Standard deck broke $500 only for a handful of days between Return to Ravnica and Battle for Zendikar
It was originally printed in Worldwake back in 2010 - even that version of the card is worth over $17 - showcasing this Kor Artificers impressive staying power
He might be able to help you cheat out some powerful items, but the subpar statline hurts, as does the fact he's not inkable