These additions were suggested by a friend after our most recent draft of the cube.

Selfless Spirit, Spell Queller, Niblis of Frost: Buffing Azorius Spirits. Selfless Spirit also protects against various board wipes.

Ishkanah, Grafwidow, Grim Flayer: Buffing Golgari, also adding some reach to green.

Spirit of the Hunt: Buffing Gruul Werewolves.

Collective Defiance: Adding a stronger red sorcery, particularly good for Izzet Spells.

Removed Cards

Ambitious Farmhand, Candlelit Cavalry: There were too many Humans in this cube, these are among the weaker.

Teferi, Who Slows the Sunset: Didn't really have anything to do with the Azorious archetype of Spirits and Enchantments.

Spore Crawler: The weakest green 3-drop.

Old Stickfingers: I've been told this before, but after drafting him myself I am forced to agree - this ability just doesn't work in a limited format. Grim Flayer supports the same archetype, but better.

Gutter Skulker: One of the weaker spirits in blue.

Ancient Grudge: After recently removing several artifacts, this became even weaker than it already was. There are much better red spells available for Izzet etc.