Spree Success on this plane, and on other planes I suppose, often boils down to not settling when you can have it all
While the serialized Emeritus of Ideation is destined to be the most expensive MTG card in this set, full stop, you'll only have a (slim) chance to find one if you're opening collector packs
The risk of it being weak if you draw it later on is worth the power of having it early
Its susceptible to friendly fire in cEDH where multiple decks can play it, and in casual it can fall to any number of ping effects
When you do attack, you can just choose to not attack with creatures that naturally have one toughness, focusing only on attacking with your powerful creatures
What Disfigure can't kill but Fatal Push can, without revolt: 12 (Thing in the Ice, Celestial Colonnade) What Disfigure can't kill but what Fatal Push can with revolt : 21 (Courser of Kruphix, Hellrider, Kalitas, Traitor of Ghet) For reference, 30 creatures can't be killed by either Disfigure or Fatal Push , creatures like Consecrated Sphinx, Sarkhan, the Dragonspeaker, and Baneslayer Angel