Liam Briar, Cursed with Sight

Deathtouch, menace

Whenever an opponent discards a card, or sacrifices a permanent, amass Horrors 1.

{t}, Pay 2 life: Add {u}{b}. Spend this mana only to cast Eldrazi or Horror spells.

Eldrazi and Horror spells you cast have emerge
{x}{u}{b}, where X is the spell's mana value.