We want to cast our commander as soon as possible, either through a Jeweled Lotus, Grim Monolith, Mana Crypt, Dark Ritual, or what have you
Again, like the Elder, you generally wind up playing planeswalkers over Den Protector due to their overall cost being in the same sort of range
Then you can exile a graveyard and gain a bunch of life, ramp out two lands of any type not just basics tapped, make a pair of 2/2 Bear tokens, or toss a pair of counters on all of your stuff for the going wide, and with the Bears as a default that's two 4/4s for six mana on a naked board
For instance, you can imprint Dramatic Reversal, and youll be able to generate infinite mana if you have enough nonland cards to produce 3 mana
Dalaran Plane: Azeroth Instant and Sorcery spells cost less to cast
This could also take a Seedtime or Temporal Extortion if your opponents are in Sultai turns