Equipped creature gets +3/+0 and has trample
When your deck is built around a legendary creature, the ability to activate or attack with them immediately upon casting is huge
The next time we would see numerical norm breaking was with the release of the The New Norm Looking at more recent sets, such as the Lord of the Rings Holiday Release or Weve seen that reducing the number of serialized cards frequently increases their overall price less is more in the collectibles world, afterall but whether or not this rises to the same degree of prominence as what we saw experimented with via the Praetors in March of the Machine is yet to be seen
Ral Zareks ultimate seems like a close analogue to Yusri, but Ral offers no actual choiceyou have to flip five coins and theres no reason not to flip the coins or not ultimate (unless youve got a Time Vault in play)
This has a higher ceiling, because it just counts permanents and not permanent types, and this format certainly has a variety of ways for you to set up your graveyard, but the ceiling here is still a huge vanilla creature, one that you normally cant really play reasonably on turn two