Phyrexian Ruins

As long as Phyrexian Ruins is not enfolded, it has
"{p/c}{t}, sacrifice an artifact creature: destroy
target creature."
Enfolded creature is an artifact creature in
addition to its other types, and has "sacrifice
another creature: Put a +1/+1 counter on this creature."
Enfold: {2} ({2}: Attach to target creature you
control; or unattach from a creature. Enfold only
as a sorcery. An enfolded mantle land is still
a land.)