so, if youve got a card that is Red and White, then you can only use Red, White and Colourless cards
20 Glissa, Herald Of Predation Incubate And Infect Suggested Cards: Elvish Vatkeeper, Grafted Butcher, Bloated Contaminator Glissa, Herald Of Predation, is one of the best commanders for Phyrexians
But conniving is strictly worse than drawing a card, so any reanimation or graveyard-mechanics help take this deck to the next level
[19-039R] Emerald Weapon If Emerald Weapon has moved from the Break Zone when the auto-ability is resolved, such as by being removed from the game, Emerald Weapon does not enter the field
This is what makes it an extremely attractive include in any sliver deck looking to go for a longer game