From my experience behind the scenes with Pro Tour testing teams, their Limited specialists want to get to the last milestone and maybe knock out a few stretch goals if they can
One could argue that Jumbo Cactuar is not broken at all, and that there are already some very powerful cards that can single-handedly win a game even without 10,000 power, and that is true
Signpost can be very funny, very political, or both, and the added ramp isnt bad either
Wastes first saw print back in 2016s Oath of the Gatewatch, and its only been reprinted in supplemental sets since
Will of the Temur I value modal spells quite a bit, and though Will of the Temur only has two modes, the ability to target any permanent with the first, and any player with the second is super strong
A few notes about some of the abilities