I suspect WotC just wants to take a breather and see how things play out before continuing to act
You have to pay a truck load of mana (7, 10, 13, 16, etc.) to have this even do anything, and the effect itself is of course completely unreliable
1 Borderless source material card There are 40 source material cards that can appear in this slot
DSK Duskmourn: House of Horror 304 - Rare - English "Whatever happens, we need to stick togethAAAAGGGHHH!" Recovered tape fragment Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Pauper
This has great potential later in the game and when it costs 7 mana, it will most likely be cast later in the game and that's ok
Thats right, poison counters are back, though with a lot more of a toxic effect on the game than the Infect keyword that debuted back in Mirrodin Besieged