Leyline of Abyss

If Leyline of Abyss is in your opening hand, you
may begin the game with it on the battlefield
When Leyline of Abyss enters the battlefield, if
it wasnt cast, lose half of your starting life total
{t}: Add {c}{c} to your mana pool
If a spell of ability you control would cause
Leyline of abyss to untap, you lose the game.