Phyrexia: All Will Be One

Crawling Chorus | Creature | Phyrexian Horror | Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When Crawling Chorus dies, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block." | Michael Walsh

Sinew Dancer | Creature | Phyrexian Soldier | {3}{W}, {T}: Tap target creature. Corrupted — {W}, {T}: Tap target creature. Activate only if an opponent has three or more poison counters. | Campbell White

Skrelv, Defector Mite | Legendary Artifact Creature | Phyrexian Mite | Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) Skrelv, Defector Mite can't block. {W/P}, {T}: Choose a color. Another target creature you control gains toxic 1 and hexproof from that color until end of turn. It can't be blocked by creatures of that color this turn. ({W/P} can be paid with either {W} or 2 life.) | Brian Valeza

Swooping Lookout | Artifact Creature | Phyrexian Construct | Flying, vigilance | Mike Franchina

Zealot's Conviction | Enchantment | Aura | Flash Enchant creature Enchanted creature gets +1/+1. Corrupted — As long as an opponent has three or more poison counters, enchanted creature gets an additional +1/+0 and has first strike. | Filip Burburan

Basilica Skullbomb | Artifact | | {1}, Sacrifice Basilica Skullbomb: Draw a card. {2}{W}, Sacrifice Basilica Skullbomb: Target creature you control gets +2/+2 and gains flying until end of turn. Draw a card. Activate only as a sorcery. | Gaboleps