Although the exact mechanics aren't confirmed, if they follow previous games, you should be able to collect most of your missing cards in the Kanto collection through trading
Snowball with Lightning Accelerator and close the game
Like most Magic: The Gathering cards, the value of Alrund, God of the Cosmos // Hakka, Whispering Raven depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Kaldheim)
There's a growing range of cards that care about this game action, and they don't mind that the card ends up in exile
The 10 three-color combinations are: Abzan : White/Black/Green Bant : White/Blue/Green Esper : White/Blue/Black Grixis : Blue/Black/Red Jeskai : White/Blue/Red Jund : Black/Red/Green Mardu : White/Black/Red Naya : White/Red/Green Sultai : Blue/Black/Green Temur : Blue/Red/Green Four-color combinations The five four-color combinations technically also have special names, which come from a cycle of cards called Nephilim from the 2006 set Guildpact (part of the first Ravnica block)