Having access to lots of narrow effects like this in your deck also makes your opponents spell-stealing effects much worse, on average, which is a nice bonus
Since I'll be referring to the decks by name through the rankings, here are the Commander 2016 deck lists for reference
#6: Earthcraft Earthcraft is most commonly thought of alongside Squirrel Nest: This combination creates an extremely cheap and efficient loop that is just one example of how many normal cards break in half when Earthcraft is in the mix, despite how similar it is to some modern day cards, such as Cryptolith Rite
Entomb - Quick and easy way to get an important creature into the graveyard to be reanimated later
Wield the power of Tarkir's most fearsome creatures with Mox Jasper, seen here on Tarkir: Dragonstorm 's headliner card
If you cheat it onto the battlefield with Sorin, Imperious Bloodlord, you can skip its hefty 7-mana cost and get straight to the good stuff: conjuring a card from its spellbook to cast for free that turn