Mage Noir – le cercle

The symbol in this card's Mana costs requires you to exhaust your animal as a cost to prepare this spell.

The "Mana costs" mentioned by this spell's ability are the Mana costs displayed on the left of the Animal's abilities. Additional costs that may be mentioned in the ability itself are not affected by this spell.

Also just to be clear, since those effects happen twice, you will still get to pay those additional costs twice if you want to fully apply your animal's abilities twice.

Having two "Gigantic Size" on the board makes your animal's abilities 4 times more expensive, however, they still only apply 2 times.