Kaldra, Living Weapon

First strike, trample, indestructible, haste
Equipped Creature gets +5/+5 and has first
strike, trample, indestructible, haste, and has
whenever this creature deals combat damage to another creature, exile that creature.
Reconfigure 4 (4: Attach to target creature you
control; or unattach from a creature. Reconfigure only
as a sorcery. While attached, this is not a creature.)