Knight Exemplar and Goblin Chieftain are other powerful options that can help to decimate all your opponents at once
Two mana to discard two cards is also just an incredible price, and is especially potent when Hymn to Tourach follows a turn-one discard spell like Thoughtseize or Inquisition of Kozilek
Wizards of the Coast doesn't often talk about proxying, but fortunately, in its last official statement on the subject, made in 2016, the company made its stance pretty clear
Whenever a player casts their first spell each turn, choose another target player
So if in the above example if you see four 12-point people sitting down to play, you can use that information to decide whether you want to draw with your own opponent
If this was a Golgari commander with access to green cards, Id suggest a bunch of deathtouchy rats and some bite spells, but Ive learned to stop when I feel Im stretching