Evelith, Mage Reborn

Evelith, Mage Reborn is indestructible while untapped.
Whenever another player casts a spell, you may pay {x} where {x} is equal to the number of creatures you control called Simulacrum. If you do, create a colourless creature token called Simulacrum which is a copy of Evelith, Mage Reborn with toughness 2.