The creatures we call Pokemon are some of the most beloved characters of any series ever, and this also extends to the Trainers
This is pretty much the shape of things for now, but Sanderson seems confident that the collaboration will come to fruition in the future: I do think its probably something that will happen, assuming MTG doesnt fall apart. Interestingly, Sanderson has specific expectations for what hed want out of a Cosmere Universes Beyond, too
Yes, you can copy a loyalty ability as long as its already on the stack

Okay, so heres how the deck ended up: Creatures (28) 1 Mother of Runes 1 Solemn Simulacrum 1 Soul Warden 1 Auriok Champion 1 Karmic Guide 1 Nikko-Onna 1 Dust Elemental 1 Stonecloaker 1 Stormfront Riders 1 Whitemane Lion 1 Reveillark 1 Twilight Shepherd 1 Kor Sanctifiers 1 Kor Skyfisher 1 Stoneforge Mystic 1 Wall of Omens 1 Mentor of the Meek 1 Angel of Serenity 1 Angel of Finality 1 Jeskai Barricade 1 Oreskos Explorer 1 Thraben Inspector 1 Anointer Priest 1 Binding Mummy 1 Disposal Mummy 1 Alms Collector 1 Suncleanser 1 Boreas Charger Lands (39) Spells (32) 1 Wrath of God 1 Pearl Medallion 1 Swords to Plowshares 1 Sol Ring 1 Aura of Silence 1 Seal of Cleansing 1 Skullclamp 1 Loxodon Warhammer 1 Allay 1 Worn Powerstone 1 Rout 1 Return to Dust 1 Dispeller's Capsule 1 Eldrazi Monument 1 Basilisk Collar 1 Rootborn Defenses 1 Blind Obedience 1 Obelisk of Urd 1 Commander's Sphere 1 Oketra's Monument 1 Anointed Procession 1 Time to Reflect 1 Unconventional Tactics 1 Settle the Wreckage 1 Heirloom Blade 1 The Immortal Sun 1 Blackblade Reforged 1 Divine Visitation 1 Crush Contraband 1 Dawn of Hope 1 Smothering Tithe 1 Ravnica at War What do you think

As near as I can tell through some Google searching, the Chaos Deck variant was being talked about online as early as 2004, though I suspect it was played offline much earlier than that
Karma, Flashfires, Anarchy, Acid Rain, et all Im not apologizing for it, but I won my first tournament on the back of Flashfires