Elena, Watchful Seeker

When Elena enters play, if you cast her from
your hand, draw X and untap up to X lands.
Vindicate—{g/u}{g/w}{b/r}{p/c}: Destroy all creatures that
dealt damage to you so far this game. Then those creature's controllers each exile a number of permanents equal to the total number of
creatures destroyed this way.
{4}{t}: Scry 4, then draw 2.