Ebner, Bookish Arcanist

{x}{g}{g}, {t}: Another target creature gets +X/+X
and gains trample until end of turn.
{x}{w}{w}, {t}: You gain twice X life.
{x}{u}{u}, {t}: Discard exactly X cards. If you do,
scry X, draw a card, then discard a card.
{x}{b}{b}, {t}: Target creature gets -X/-X until end
of turn. You lose X life.
{x}{r}{r}, {t}: Target noncreature artifact with
mana value X deals X damage to its controller. Its controller sacrifices it.