Wrong elemental when buying mastery pass
When you buy the mastery pass, you get the ondu elemental (pale rock w/ purple crystal), but it show the guul draz one (skull & dead plants) when all the stuff you get pops up.
For this issue, please submit at: https://mtgarena-support.wizards.com/hc/en-us/requests/new and select 'General Questions'.
I had the Ondu Elemental and mastery pass unlocked. I leveled up my mastery pass from 24 to 25. It rewarded me the Ondu elemental again, instead of the Guul Draz Elemental!