Gaia the Fierce Knight

First Strike, Offering(When casting this card you
may sacrifice creatures you control of the same type.
This card costs {x} less equal to the combined mana
value of the creatures sacrificed.)

Noble Steed—Beast creatures can be used for this creatures Offering, and if you do this creature
has Haste and Double Strike until end of turn.

If a Warrior is used for this creatures Offering,
put a Shield counter on this creature.