Lynthul, God of the Unnatural

Indestructible, Unblockable.
Lynthul, God of the Unnatural cannot attack unless you control another creature with uneven power and toughness.
{3}: Sacrifice a creature and discard a creature
card. Create a blue and black Aberration creature token with power and toughness X/ Y, where X is the sacrificed creature's power and Y
is the discarded card's toughness.
"We will achieve perfection at any cost"