As long as you control a historic permanent, you may choose two. (Artifacts, legendaries, and Sagas are historic.)

Choose one —

Descendant’s Authority deals X damage to target creature, planeswalker or battle and you gain X life.

Quicken X (Choose up to X cards with counters on them, then add or remove up to one counter of a kind already there from among those permanents.)

Amass Horrors X.