Since this format includes cards from the very first days of MTG, prices have gone up as peoples demand for reserved cards increased
Terra, Magical Adept, for example, has only Red and Green mana symbols on its front face
Cards 8-Rack Doesnt Want To See Cards that enter the battlefield when your opponent makes you discard them: Cards that create multiple creatures: Creatures that come back when they die: Decks dense in artifacts making Wrench Mind poor: G/R Tron Affinity Eggs Tezzeret strategies What 8-Rack Wants To Play Against Decks trying to win with one creature threat: Infect G/W Hexproof Splinter Twin Decks that also want to operate on low resources: Jund Discard or Land Destruction Decks that need a saturation of cards in hand: Storm Dedicated creature removal: If you feel that there is a decent number of good things going for 8-Rack in your metagame and low numbers of the things 8-Rack doesnt want to see, then go for it
The payoff for Kraven the Hunter is for you and your table to do what they should be doing in a game of Commander, trying to defeat the biggest threats
Giving a creature +2/+2, vigilance and haste all for no mana is just very intoxicatingly powerful
Im happy to play more than one Toll in all of my black decks