Venomous Brutalizer [Phyrexia: All Will Be One] BT4-054 Each artifact you tap after

Each artifact you tap after you're done activating mana abilities pays for {1}

not even a hoofprint

they may cast a spell from among other cards exiled with Knowledge Pool without paying its mana cost

"The reflection is true

Mind Blast

Venomous Brutalizer [Phyrexia: All Will Be One] BT4-054 Each artifact you tap afterSet: Phyrexia: All Will Be One Type: Creature Phyrexian Knight Rarity: Uncommon Cost: {2}{G}{G} Toxic 3 (Players dealt combat damage by this creature also get three poison counters.) When Venomous Brutalizer enters the battlefield, you may pay {1}{G}. If you do, proliferate. (Choose any number of permanents and or players, then give each another counter of each kind already there.)