If youre playing a deck with lots of 1/1 tokens, this becomes a very powerful draw engine, and undeniably one of the best colorless cards MTG mechanics have made significantly hard to counter (its an activated ability and a triggered ability a standard Counterspell wont cut it)
However, there is one way I can see an "oops, I win" coming together, and it's this: With a whole lot of mana out, we probably have to play Izoni and Aatchik in the same turn (though if we can get through a turn cycle having played one, that'll work too)
It gives the ability to EACH creature, meaning each one of your creatures can be targeted TWICE by something like Lightning Greaves for free to either put a land into play UNTAPPED or a card into your hand
Bantharmonicon was the first infinite-combo Panharmonicon deck we played
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