Evar-Tig, The Omnipresent

The X in the casting cost is equal to the number of creatures in your Party x 5
Evar-Tigs power is equal to the combined power of all creatures that you control
Sacrifice Evar-Tig, The Omnipresent: Exile all Nonland Permanents
{10}{10}: Evar-Tig gains Double Strike, Menace, Lifelink, Deathtouch, and Flying until your next turn