Unlike other cascade-styled commanders, Yidris, Maelstrom Wielder has no restriction on what cards get cascade unlike something like Imoti, Celebrant Of Bounty
You can also use IRS to Special Summon additional Midfielders if you really felt like spamming the field with them
These will probably draw from those whose Ancient or Future forms were introduced in Scarlet and Violet
This makes the Hybrid Land cycle the fourth rare dual land cycle to be made for both allied and enemy colors (The others include the Dual Land from Beta, The Pain Lands from Ice Age and Apocalypse, and The Shocklands from Ravnica block).
If the event ends before you return, you wont have to worry about this until another one starts.
It was only available for purchase for two weeks in December 2020, and as with all Secret Lairs, once the sale ended the product would no longer be produced