The controller of that creature then searches their deck for a basic land and puts it on the battlefield tapped, and then shuffles their deck
While at this time it would be exes, in the future, this would be whatever the generational gimmick is, e.g.: Lv.X, EX, GX, V, ex (SV) Discontinued/Revised Rarities note: just because there is something here now, doesn't mean it wont come back in the future
Thats likely not why this version is valued so highly
those stats usually require six mana
Modern Horizons 3 introduces some incredibly powerful cards to Magic, some of which are just a little too good to let them run rampant
Little-known fact: Jigglypuff can't sing, but its Jewish cousin, Jigglyberg, is a fantastic cantor