Lastly, you need to fill a lot of your spell slots with cards there mainly to trigger prowess
We have 28 years of draw-then-discard spells to choose from, and we should almost exclusively be playing them as our card selection tools in a Sefris deck
This plays into other white effects that punish creatures that have harmed you
The Leader version (OP11-062 Parallel, $13-20) anchors Purple Big Mom Pirates decks that consistently top-cut Japanese tournaments, with deck-viewing ability providing crucial information advantage
Only around 13% of Killian, Decisive Mentor decks currently include a copy of Umbra Mystic, so while theres definitely interest, this white human wizard doesn't look like an auto-include
If you choose new targets for a spell or ability, those new targets must be legal