The trouble is they generally end up killing me more often than my opponents ;P Pulling off a Global Ruin in my wubrg natural disaster deck, with five lands remaining
Mirrodin Soul Foundry Living Hive was the first creature to turn each point of combat damage done to a player into a creature token
I believe that we're getting pretty close to making a generic deciduous version of this mechanic
Once in play, K'rrik is a stellar form of Black mana ramp, allowing each black mana symbol on spells and abilities under its owner's control to function as Phyrexian mana, meaning a player can reduce the costs of their black spells through the payment of life
Although these three are somewhat fair cards, WotC learned a lesson the hard way of not printing card draw in delve spells like Treasure Cruise, since those are really problematic
Conclusion: Jared is all in on WUBRG tribal and multi-color bonuses