I — Put a +1/+1 counter on up to one target creature. That creature becomes an artifact in addition to its other types. II — Destroy all nonartifact creatures. III — Exile all opponents' graveyards.
{2}, {T}, Choose flying, first strike, trample, or shadow: Until end of turn, target creature with the chosen ability loses it and another target creature gains it.
{T}: Add {B}. {2}{B}: Phyrexian Totem becomes a 5/5 black Phyrexian Horror artifact creature with trample until end of turn. Whenever Phyrexian Totem is dealt damage, if it's a creature, sacrifice that many permanents.
Flying If damage would be dealt to Phyrexian Vindicator, prevent that damage. When damage is prevented this way, Phyrexian Vindicator deals that much damage to any other target.
"I have heard terrible tales of black rains, ashen fields, and metal that screams. I have consoled myself that the tales were a myth of some fevered mind. But today I saw a walker—and now I fear the truth." —Kasib Ibn Naji, Letters
Kicker {W} When Phyrexian Warhorse enters the battlefield, if it was kicked, create a 1/1 white Soldier creature token. {1}, Sacrifice another creature: Phyrexian Warhorse gets +2/+1 until end of turn.
Phytohydras are banned as houseplants in many residential spires. If left unfed, they find their own exit—usually at the cost of extensive property damage.