You can always get maximum value off Oracle as long as there's a land on top
Magic has had what are called "modal double-faced cards" before that allow you to cast either side from your hand, but this is the first I know of that also allows you to pay a cost to flip it while the front side is already in play - in this case, you can play Peter Parker for two mana, and then pay four more on a later turn to have him transform

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Whoa...spoiler alert
This wont solve every problematic board state, but it does a lot of heavy lifting for 4 mana, and doesnt require any setup to be a very good inclusion in most Commander decks
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