Kaldra

Vigilance, Haste
Kaldra's power and toughness are equal to
the number of artifacts you control.
Equipped creature gets +X/+X and has vigilance
and haste and equipment spells you cast cost {x} less to cast, where X is the number of artifacts
you control
As long as Kaldra is attached to a creature,
Kaldra isn't a creature.
Equip {2}
Unequip {1}