This card has a lot of potential in both Standard and Commander and it's already seeing some play in both formats, but time will tell if it fully lives up to that potential
Fortunately, the card packs and decks that you buy with gems are shared between devices, so you can buy gems on one platform, spend them to unlock new cards, and then use those cards on another device
All of these are very much versions you can find easily, and for very cheap if your deck wants a Phyrexian Arena
In the modern era, this usually means that players use cards like Lightning Storm, as that card can choose between the backrow and the monster zones and destroy all the cards in the selected option
A cool innovation, but pretty bad in the face of Shiko, Paragons Way as it can only target non-flying creatures
Its impossible to avoid, and the window of opportunity it opens can be the difference between victory and defeat in many situations