Adapted Out: Each campaign streamlines the story and events, leading to moments where certain duels and even duelists are omitted entirely, including characters like the Paradox Brothers, Espa Roba, Lumis, Umbra, Rebecca Hawkins, Mad Dog, Allen, and the Tyler Sisters
Queen Allenal of Ruadach provides a way to double your token generation while also building a large body on the field
Avacyn Restored is the set that concludes the original Innistrad block, which was probably the biggest hit outside of Ravnica that MTGs ever had
Any cards which dont fit into one of those categories are probably lowering your power level, so consider how many you play when finding the right balance for your table
Best of all is this is only a small smattering of enter-the-battlefield creatures, meaning there's no shortage of cards to utilize in your decks