If they don't know your strategy, you could try and fool them, or just pick three super-cards and watch them struggle to guess which one is least dangerous
Theres a pretty wide range for how to make a proxy. Some people write the name and abilities on a piece of paper covering a reversed card in a sleeve, some write the name of a card on the back of a bulk card like a basic land, and many people just print out the card in question
This helps me dig for whatever I need, from Boromir to Winota
Later this year, Ill celebrate my 24th anniversary working here at Wizards on Magic, he says
When hes a Vehicle, he makes Human spells uncounterable
As mentioned earlier, youll need to decide what your winning plays will be , likely something to do with your commander, but the more outs, the better