Rite of Replication or Myojin of Cryptic Dreams can get you there unconditionally in one card, while Echoing Equation and Mirrorweave are more battlefield-dependent
The controller of the Battle chooses the Protector when the Battle enters the battlefield
It also works well with small mass damage spells like End the Festivities, basically making it a Plague Wind
And even when we do existing mythologies, we do our take on, say, Greek mythologies
If you want them to really hate you, play Drannith Magistrate - a two mana card that stops your opponent's from casting their Commanders
Booster boxes, Elite Trainer Boxes, and case-style products are heavier, larger, and often need a gentler elevator-style retrieval path so the box does not arrive crushed