All in all, the foil slot in a War of the Spark box is worth just under $14, which is a couple of dollars more than normal, mostly because of the uncommon planeswalkers
On the other hand, Odric, Master Tactician can just force all of your opponents to not block, or get rid of pesky creatures your opponents have by deciding how they block
All you really want with Lathnu Hellion is to hit your opponent once
Tome-Skimmer is self-explanatory, but the presence of Convoke allows Tanufel Rimespeaker to do a lot more work than it looks
If youre seeing 70% or more of your deck in a game, then digging two cards deeper is not that significant, and it can result in games where you have one less threat to deploy as you run out of resources
For instance: if you had three Clues, enough mana, and all the relevant cards exiled under Lazav, you could cast Cackling Counterpart targeting Lazav, hold priority before it resolves, sacrifice a Clue to trigger Lazav to transform him into Marionette Master, hold priority again, sacrifice another Clue to trigger Lazav to transform into Octavia, Living Thesis, hold priority once more, cast Armor of Shadows, let everything resolve, then sacrifice a final Clue