Good creatures and the removal to destroy them are at a premium in draft, so any player going green should focus on that color's traditional strengths while also smartly using green's tricky effects with Bargain, Food, and Adventures for Wilds of Eldraine Limited events
Giving your other creatures haste is the whole point, because every topdeck becomes instant pressure and your curve feels a turn faster
It also makes things absurdly hard to keep track of
If you choose not to (or can't) cast the card, it remains exiled with no time counters on it, and it's no longer suspended
Sure, Mallow and Lana was decent, but it wasnt quite strong enough to be a centerpiece especially as the format pushed more toward OHKOs
Whenever Vessel of the All-Consuming deals damage to a player, if it has dealt 10 or more damage to that player this turn, they lose the game