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
Blood Moon An extremely punishing option that can almost single-handedly lock unlucky opponents out of the game
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
If the target isn't legendary as the spell is cast but becomes one before the spell resolves, that creature will gain trample.
It makes a good pairing with The War Doctor
(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