The target opponent can still activate abilities, including abilities of cards in their hands (like cycling)
While this sounds like an upside on the surface, in practice it leads to a lot of frustration and confusion
(Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.) At the beginning of combat on your turn, you may have Treasures you control become 3/3 Construct Assassin artifact creatures in addition to their other types until end of turn
A no-brainer of a first pick
To play in real life, you dont necessarily need to get an entire deck of scheme cards together
Urzas Iron Alliance [Artifact Synergy, Combo Potential, Classic MTG Lore] Urzas Iron Alliance is all about building a huge army of artifact creatures with the legendary Urza leading the charge