Doing It for Kathril (EDH / Commander) [Révision 21]

A modified build of the 2020 commander precon "Symbiotic Swarm".

The focus is to dump creatures that have keywords into the graveyard to allow Kathril, Aspect Warper's ETB effect to generate as many counters as possible, then swing hard to knock out other players with commander damage.

An alternate play is to go wide with Eerie Ultimatum and resurrect as many dumped creatures as possible. This is best used when you can resurrect Akroma, Vision of Ixidor alongside other keyword creatures.

Dumping creatures is done mainly via self-mill cards such as Grisly Salvage, Perpetual Timepiece, and Nyx Weaver. There are also cards that put creatures directly from the library into the graveyard such as Buried Alive and Gravebreaker Lamia.

The highest number of individual keywords you can get into the graveyard by using Buried Alive is nine. This is done by sending Bassara Tower Archer, Leyline Prowler, and Zetalpa, Primal Dawn.

This build also makes good use of flicker cards such as Cloudshift and Ephemerate since Kathril's counter generation is an ETB effect. Combine this with The Ozolith to hold on to the counters Kathril would lose when it flickers.