yugioh card time machine CSOC-EN091 1st Edition Secret Rare Near Mint From the Crossroads of Chaos set Time Machine - Ultra Rare

If you only have Etched Champion and two other artifacts in play and your opponent makes a move to kill it by using two removal spells (one for another creature and one for the Champ), you can counter it by activating a Nexus and turning metalcraft back on

How To Know If You Own A Rare Card In terms of general Rare cards, the way to identify them is by looking in the bottom left corner of the card

But of course all of that is tangential to the question of whether pile shuffling works

This earns you at least one pack per season, and more if you attain a higher rank in the system

Authentic Japanese prints straight from the Scarlet & Violet: Glory of Team Rocket (SV10) set