Cube Draft TriLand cant use
If you try to use Tri-Land card (Ex:Raffine's Tower) in a cube draft, it will look like this image and you won't be able to use it.
Refund the participation fee.
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DAC169#34537 commented
Over here https://feedback.wizards.com/forums/918667-mtg-arena-bugs-product-suggestions/suggestions/48480350-cant-play-triomes-in-chromatic-cube it was suggested that drag & dropping it into the deck area will apply the base card style. Have you tried that?