As someone whos always trying to find ways to get certain win conditions in Commander online faster, this seems like an incredibly strong ability thats sure to, pardon the pun, warp certain games around it
Protective spells can be lumped into two broad categories: spells that protect a single creature or permanent (Tamiyo's Safekeeping, Slip Out the Back) and cards that protect your entire board (Teferi's Protection, Heroic Intervention)
But I think at best for me its one of the 99
Result : Infinite creature ETBs and LTBs, and sacrifice triggers
When Training Grounds shuttered, a similar enterprise called Top Deck Games took its place and scheduled a launch for last May when a pair of burglaries a few days apart bookended the grand opening, derailing some of the new owners own business ambitions
I don't think Rakdos, the Showstopper will show up in the 99 of many decks