Which cards should be included to a fun Ashling the Pilgrim and her 80 Mountains? Protection? Stax? More ramp? Equipment? Utility lands? The focus isn't necessarily win, but to make a "WTF" surprise to everyone on the table.
Card advantage is not the same thing as card draw. Something for 2B cannot be strictly worse than something for BBB or 3BB. If you're taking out Swords to Plowshares for Plummet, you're a fool. Stop doing these things!
Tatyova|Sisay|Zurgo|Breya|Chisei|Marchesa|Olivia|KaradorLegacy|4fun|4fun|Modern|Frontier|Standard(U/B)(U/B)(U/B) JUMP IN THE LINE, ROCK YOUR BODY IN TIME
(R/W)(R/W)(R/W) RISING FROM THE NEON GLOOM, SHINING LIKE A CRAZY MOON
(U/R)(R/G)(G/U) STEALIN' WHEN I SHOULD HAVE BEEN BUYIN'
Maybe make ashling of the seven swords (get all the swords of X and Y.)
If cycling then Crucible of Worlds, I always say.
On phasing:
Well that's just rude.
To bad there is no way to stifle her ability in mono red.
Definitely Tectonic Reformation.
Basilisk Collar for massive lifegain and to kill the bigger things.
Scythe of the Wretched to steal everything you kill.
Darksteel Plate, Shield of Kaldra, Hammer of Nazahn, Magebane Armor to keep Ashling alive through its own activations.
Godo, Bandit Warlord to find one of the equipment.
2023 Average Peasant Cube|and Discussion
Because I have more decks than fit in a signature
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Ghirapur Orrery
I would pack Chaos Warp, Abrade and other spot removal.
8.RG Green Devotion Ramp/Combo 9.UR Draw Triggers 10.WUR Group stalling 11.WUR Voltron Spellslinger 12.WB Sacrificial Shenanigans
13.BR Creatureless Panharmonicon 14.BR Pingers and Eldrazi 15.URG Untapped Cascading
16.Reyhan, last of the Abzan's WUBG +1/+1 Counter Craziness 17.WUBRG Dragons aka Why did I make this?
Building: The Gitrog Monster lands, Glissa the Traitor stax, Muldrotha, the Gravetide Planeswalker Combo, Kydele, Chosen of Kruphix + Sidar Kondo of Jamuraa Clues, and Tribal Scarecrow Planeswalkers
Tatyova|Sisay|Zurgo|Breya|Chisei|Marchesa|Olivia|KaradorLegacy|4fun|4fun|Modern|Frontier|Standard