mtg cards with assist Gang Up then discard a card. EDH Deck Assist - Atraxa,

None seem particularly Modern playable, save one, but there are a few good Commander cuts in the bunch

The ability to create a token upon sacrificing a nontoken creature without any mana cost is quite strong

For dragons, we're looking for ones that fit one or more of the following criteria: 1) cheap 2) have haste 3) force attacks 4) provide powerful utility

Im sure if I looked into Modern targets theres some even more busted options

This helps you get around graveyard hate (though it might require another activation on top)

Technically, it's just a Constructed format with some particular rules that set it apart from things like Standard or Modern