Haruka, Marked of The Path

When Haruka, Marked of The Path enters the battlefield, divide your library into two equal libraries, then shuffle those libraries. (Whenever
an effect or action a player controls involves your libraries, that effect's controller choses which library.)
You may look at the top card of your libraries.
Whenever Haruka, Marked of The Path deals
combat damage to a player, draw one card from
each of your libraries.