Its flexible counters let it adapt to almost any situation, so it can act as removal, token generation, or a finisher depending on what the game demands
It doesnt take long to get that ultimate, which easily twists a game in your favor
Toxic doesnt correlate poison counters with power the way infect does, so mutating onto a toxic creature wont lead to faster poison kills
This feels like an extremely flavorful way to capture his final moments and a great piece of utility against board wipes
In some rare cases, you can have a token or a copy of a spell in your graveyard at the moment that an object's delirium ability counts the card types among cards in your graveyard, before that token or copy ceases to exist
Most planeswalkers take turns to reach their full potential, but the flying + counters mode on Elspeth can kill your opponent the turn you cast it without lessening its ability to be a long-term advantage engine