I have some limited experience with the general and as I will explain soon, Ive gone off in a different enough direction that any card I can find to help put a tally mark in the win record box is fair game
Sphinx of the Second Son triggers at the start of your postcombat main phase, but you don't get the additional beginning phase until after it
For the exact same mana cost you can play better options, like the completely unblockable Tidal Kraken
(Treat it and anything attached to it as though they don't exist until its controller's next turn.) "I was never here." Illustrated by Zara Alfonso Streets of New Capenna during that turn
Choco provides you card selection, ramp, and graveyard setup, making for the best Chocobo card in Magic's Final Fantasy set
Ziatora, The Incinerator can make ramp itself, as when you sacrifice a creature with its effect you get three Treasure tokens