If you don't find a way to turn that into insane amounts of mana (like adding an Anointed Procession for extra tokens), just go for lethal with all the extra power from prowess triggers
Besides, you can play with such cards, and their end date will increase significantly
That slime is a lot safer than slimes and oozes in Magic, which are a lot more sinister than our classroom science experiment
A 2cmc Divination is actually very good, as anyone who plays Night's Whisper will tell you, and you can avoid the discard clause quite easily in any creature-heavy deck
Of the best MTG Aftermath cards, this one is the most unique
(You may cast this card from your graveyard for its escape cost.) Sorcery Notorious Throng Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.) Create X 1/1 black Faerie Rogue creature tokens with flying, where X is the damage dealt to your opponents this turn