Whenever you cast a spell with Cascade, you can put a +1/+1 counter on an artifact or creature
2008 Sets : Morningtide , Shadowmoor , Eventide , and Shards of Alara My Pick : Reaper King ( Shadowmoor ) Morningtide was another typal set, this time focusing on classes rather than species
Lofty Denial becomes a strong counterspell and Winged Words turns into cheap card advantage
Design-wise they're whimiscal, straight out of a children's storybook with a clam as the main part of the face and the 'mouth', with goggle-eyes and a humanoid body glued onto it
On the other hand, Nethroi does a great job of keeping you alive thanks to deathtouch and lifelink, buying time until you can reanimate your choice of infinite combo using its mutate trigger
A better fit for this card would be artifact-heavy stax lists such as Heliod, Sun-Crowned , especially if they run cards such as Mishra's Workshop that can help get Trinisphere out early to start putting pressure on the faster decks at the table