While Imps Mischief is in some ways better, because it gives a Deflecting Swat effect to Black, its also nearly $30, and not worth it unless youre playing at the highest power levels in which case youre probably playing red and/or blue anyways, defeating the purpose
If your Agent Venom dies at the same time as one or more other nontoken creatures you control, his ability triggers for each of those creatures
Cards with multiple card types are at a premium, so the deck is full of stuff like: Solemn SimulacrumSolemn Simulacrum Dryad ArborDryad Arbor Demonic CovenantDemonic Covenant Theres plenty of self-mill to fill your graveyard: Deadbridge ChantDeadbridge Chant Nyx WeaverNyx Weaver Crawling SensationCrawling Sensation You also have a couple ways to get those cards back, like ReanimateReanimate and Whip of ErebosWhip of Erebos
Unhinged already has a Smart Ass
Graveyard hate that is good enough to main deck has historically been very powerful, and Endurance fits the bill
You can get professional/commercial results from these because they have superb color, can apply a white layer, and a varnish layer
