If your deck has many cards in the 4-6 range, burn decks will get under you, so playing against burn decks is a good test to know if your deck can compete with the most aggressive decks
The Big Idea comes with a fun subgame built in that lets you start churning out 1/1 Brainiac tokens, with such cool artwork that it is worth doing just to giggle at the picture
Credit: Wizards of the Coast Rush of Inspiration / Crackling Falls Marcy: On the back of the last card, if this goes in a deck with energy, I think this has good flex
Ive seen Umezawa's Jitte win Legacy games for players that should not have won, and I have no doubt it would drastically shape the Modern format should it be unbanned
That means dual lands, shock lands, and more are on the table
How Fun Are The Tarkir: Dragonstorm Commanders