Dual Avatar Compact X TRAP During the Main Phase: Banish 1 "Dual Avatar" Spell/Trap from your GY, except "Dual Avatar Compact"
The best deck in the format, Izzet Murktide, usually plays four copies of the blue-red Fast Land Spirebluff Canal
Self-Mill and Discard Dealing damage to yourself is one thing, but sometimes you want to discard your own cards or mill yourself
The two give this blue-red-white deck a theme of time manipulation, namely through the mechanic of time travel
Arceus VSTAR's ability, Starbirth, will also help you to set it up to attack in your second turn, as Starbirth will let you look for two cards in your deck
Deveney notes that the designers had to include Aerith and how she is all about unrelenting hope in dark times. As such, her card features Lifelink and grants tokens to other creatures when she dies