Escape is a graveyard mechanic that can appear on any non-land card
Some, like Huntmaster of the Fells started becoming popular in the Jund builds that emerged after the banning of Treasure Cruise and Birthing Pod in February, but as there were not a single major Modern event until last weekends StarCityGames Invitational, his price stayed low for months and only spiked this week when the wolf is out of the bag
Rather than being format staples, the ideal life for a hate card or hoser is to lurk on the fringes of the format, mostly unplayed, waiting to show up in sideboards and play the hero if a certain theme or card suddenly becomes way too good for the format
The other bans take some of the stronger cards from the format
Aim for 3040 actual zombies in a 100-card Commander deck so your tribal lords and whenever a zombie dies payoffs stay live, then fill the rest with ramp, removal, card draw, and lands