mtg opponent discards a card Cube: Top 10 Discard Effects Raiders' Wake

Four mana is steep for Ill-Tempered Loner / Howlpack Avenger, but once this fierce werewolf starts scrapping in combat, that extra damage can make it worthwhile

In Commander, resolving one of these bad boys (or having one put into play via more nefarious means, such as with Muxus) is often enough for you to pull well ahead of your opponents on board

The activated ability creates political leverage in multiplayer

What makes Shroofus such a blast to build and play is that he turns anthems and pump spells into board presence with nearly unparalleled speed one-mana acceleration like Llanowar Elves or Elvish Mystic can have you attacking with Shroofus on turn 3 before most players have blockers and then every Saproling token that connects afterward only adds to the growing swarm