I would personally cut the Saheeli - you might not know this as a returning player but planeswalkers without any dedicated support aren't typically worth running in commander unless they have an immediate impact on the game (something like Ugin, the Spirit Dragon for example )
Black only just recently started getting Enchantment removal to the point that it hasn't really shown up on many spells yet, and all of them have been non-creature ones thus far outside of the tremendously overcosted Baleful Beholder and Ghastly Death Tyrant
If you choose not to cast a spell this way, it goes to the bottom of the library with the other exiled cards
The game tried a unique leveling system in which classes level up skills and spells by using them over and over
Most decks fit into one of these four categories: Aggro Control Midrange Combo Lets take a look at each of these categories so you can find out which one is the best for you
Aggressive decks can't afford to just slam their creatures into your 5/5, and even midrange decks usually don't have creatures that top 5 toughness