Any life gained continues to be a focus with infusion and other cards from Secrets of Strixhaven like Eccentric Pestfinder, Scheming Silvertongue, and Defiling Daemogoth
The Phyrexian Dinosaur cant get countered and is difficult to remove once on the battlefield with a Ward of four
It seems to me that making this an instant was just a bad idea, but the card was a bad idea anyhow, especially at the time, where they were experimenting with mana and making tons of mana was just par for the course, which made the whole thing much worse
Felidar Sovereign can win the game in a turn, if it lives (its hard, I know, but it can)
This four-cost instant can target anything that's not a land and exile it
This might wipe out every creature currently in play, let everyone draw four cards, or even reverse the turn order