Fail on complexity : Coveted Falcon - You've already spent more time thinking about how to make this help you win a game than you ever will winning a game with its unique combination of abilities
Finally, once three counters have been stacked up, it gains +3/+0, making it into a viable attacker that still gets to eat cards from graveyards when it attacks
List of all infect, poison and toxic cards B - infect (20) 1x Pestilent Souleater 1x Vector Asp 1x Blackcleave Goblin 1x Contagious Nim 1x Flensermite 1x Flesh-Eater Imp 1x Hand of the Praetors 1x Ichor Rats 1x Phyrexian Crusader 1x Phyrexian Vatmother 1x Plague Stinger 1x Reaper of Sheoldred 1x Scourge Servant 1x Septic Rats 1x Toxic Nim 1x Whispering Specter 1x Glistening Oil 1x Phyresis 1x Tainted Strike 1x Skithiryx, the Blight Dragon B - toxic (10) 1x Bilious Skulldweller 1x Blightbelly Rat 1x Nimraiser Paladin 1x Pestilent Syphoner 1x Sheoldred's Headcleaver 1x Stinging Hivemaster 1x Necrogen Communion 1x Karumonix, the Rat King 1x Kinzu of the Bleak Coven 1x White Sun's Twilight G - poison (7) 1x Marsh Viper 1x Sabertooth Cobra 1x Venerated Rotpriest 1x Infectious Bite 1x Pistus Strike 1x Fynn, the Fangbearer 1x Noxious Assault U - infect (4) U - toxic (2) M - poison (1) U - poison (1) G - infect (15) 1x Blight Mamba 1x Blightwidow 1x Cystbearer 1x Glistener Elf 1x Phyrexian Hydra 1x Phyrexian Swarmlord 1x Putrefax 1x Rot Wolf 1x Spinebiter 1x Tangle Angler 1x Tel-Jilad Fallen 1x Viridian Betrayers 1x Viridian Corrupter 1x Carrion Call 1x Triumph of the Hordes C - infect (11) 1x Grafted Exoskeleton 1x Blightsteel Colossus 1x Corpse Cur 1x Ichorclaw Myr 1x Necropede 1x Phyrexian Digester 1x Phyrexian Juggernaut 1x Plague Myr 1x Core Prowler 1x Inkmoth Nexus 1x Happy Dead Squirrel M - toxic (9) 1x Necrogen Rotpriest 1x Slaughter Singer 1x Tainted Observer 1x Voidwing Hybrid 1x Ixhel, Scion of Atraxa 1x Ria Ivor, Bane of Bladehold 1x Venser, Corpse Puppet 1x Vishgraz, the Doomhive 1x Lukka, Bound to Ruin W - infect (5) R - infect (3) W - poison (1) G - toxic (13) 1x Bloated Contaminator 1x Branchblight Stalker 1x Contaminant Grafter 1x Glissa's Retriever 1x Ichorspit Basilisk 1x Paladin of Predation 1x Plague Nurse 1x Tyrranax Atrocity 1x Tyrranax Rex 1x Venomous Brutalizer 1x Goliath Hatchery 1x Wurmquake W - toxic (12) 1x Infested Fleshcutter 1x Annex Sentry 1x Basilica Shepherd 1x Crawling Chorus 1x Duelist of Deep Faith 1x Flensing Raptor 1x Indoctrination Attendant 1x Jawbone Duelist 1x Mite Overseer 1x Skrelv's Hive 1x Charge of the Mites 1x Skrelv, Defector Mite B - poison (9) 1x Pit Scorpion 1x Suq'Ata Assassin 1x Swamp Mosquito 1x Relic Putrescence 1x Virulent Wound 1x Vraska's Fall 1x Caress of Phyrexia 1x Infectious Inquiry 1x Phyresis Outbreak
If your Commander costs four mana, then this will likely be a fair mana spent to give a +4/+4 boost and this fits
