Mewtwo EX Box, EX Cards, and Mega Mewtwo The EX era brought Mewtwo back with boosted HP and full-art treatments
Many Commander decks are bottom-up
If ignoring those objects causes the effect's conditions to no longer be met, the duration will expire
Then you think about the fact that youd probably rather play Swords to Plowshares , Abrupt Decay , Assassins Trophy , Vindicate , Anguished Unmaking , etc
It's gotten to the point where many of these cards are worth more than most peoples' homes
Finale of Revelation requires 12+ mana to get all its perks, but that includes untapping some of your lands, shuffling your graveyard into your library, and removing your maximum hand size for the rest of the game