Roxana, Weaver of Wilds

{t}: Create a green Spider artifact creature token
with reach and "This creature's power and
toughness are each equal to the number
of artifacts you control."
{3}{g}, {t}, Sacrifice a permanent: Create a token
that's a copy of target permanent. It's an
artifact in addition to its other types.
From silken threads, Roksana crafts life,
ensnaring fate in her web.