Sure, it had ways to destroy permanents likes creatures with flying as well artifacts and enchantments, but straight-up creature removal was something it sorely lacked for many years
Legality depends on the tournament format -- Urza, Lord High Artificer can be legal in some formats and banned or restricted in others
With cheap creatures, Dryad Arbor, blinking Nadu, or any number of other tricks, it's pretty easy to use Shuko and Nadu to get through your entire deck
As always, foremost in your mind as you draft should be your mana base, mana curve, creature count, removal spells, and card advantage
Its no surprise that plenty of these cards saw heavy Constructed play, at least in Standard
Korvold, Fae-Cursed King One of the most busted sacrifice commanders in the game, Korvold, Fae-Cursed King tends to exploit Treasure more often than other creatures, but its still lets you sacrifice your Shambling Ghast and similar cards while rewarding you with plenty of card draw for taking the game actions your deck wanted to do anyway
