Some of them have aged better than others
On the flipside, you could build a Y'shtola deck that doesn't focus on this Creature package at all, and you can win the game through alternate conditions, whether that's by dealing enough damage with Y'shtola herself or casting cards like Sheoldred, the Apocalypse, Bloodchief Ascension, or a personal pet card, Approach of the Second Sun
It has enchantments that can gain you life
And while these cards can work like semi-official proxies, the good ones are also quite expensive
2015-11-04 If a Confluence is copied, the effect that creates the copy will usually allow you to choose new targets, but you cant choose new modes
If youre playing vs Ifrit, you have the choice to block/trade with it, let it through, etc