As an opponent casts a spell, throw damage at their life total based on its mana value with Refuse
There are few things better than countering a spell and adding to the board at the same time
Battle for Zendikar Limited featured powerful and large creatures, and being able to kill a seven-mana creature like [casthaven]Ruin Processor[/casthaven] or five-mana creature like [casthaven]Tajuru Pathwarden[/casthaven] for only four mana is a good trade
If your opponent has a planeswalker and you want to get rid of it, you can attack it directly instead of attacking your opponent
Set designers don't create cards specifically with Pauper in mind, but due to the dominance of Cranial Plating in that format, it was pretty much a known factor how problematic Cranial Ram would be if it were allowed to run free
Youll be bouncing spells off your opponents, or draw cards for a more aggressive strategy