Slaughter Singer You run four of these if you are playing a Selesnya toxic aggro deck
Depending on the size of your board, this humble enchantment is potentially a game-ending threat
If this list were only for the first season of legality, I think Glorybringer will see more play, but after rotation this fall, its very possible the format is warped around Gideon of the Trials
These cards often suffer from damage that goes beyond normal wear and tear from playing
There are several more scenes in the set you can assemble with cards found in Draft, Set, and Collector Boosters
Infectious Inquiry, Ichor Rats, and Vraska's Fall are huge boons in this situation since they poison each opponent outside of combat