The trick is to demonstrate it with a player who can offer you something good in return or in colors that suggest they wont have many creatures
Heartfire Hero, Evereth, Viceroy of Plunder, and Perilous Myr might not be as good as a threatened subject to fling, but they can win games
Youll generally use effects that either end the turn, like Sundial of the Infinite, or ones that prevent you from losing the game, like Platinum Angel
Allows you to protect and bounce perhaps a Cyclonic Rift of your own, let's you get a free Harrow while your opponent pays for its cost, or navigate your way through a stack war with style
Theyre all categorised with TG prefixes on their card numbers, to make identifying them incredibly straightforward