The Lost Caverns of Ixalan

The Ancient One | Legendary Creature | Spirit God | Descend 8 — The Ancient One can't attack or block unless there are eight or more permanent cards in your graveyard. {2}{U}{B}: Draw a card, then discard a card. When you discard a card this way, target player mills cards equal to its mana value. | Victor Adame Minguez

Saheeli, the Sun's Brilliance | Legendary Creature | Human Artificer | {U}{R}, {T}: Create a token that's a copy of another target creature or artifact you control, except it's an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step. | Cynthia Sheppard