The artifact lands from Mirrodin come in clutch here
The secondary commander, Szarel, Genesis Shepherd, is a consistent engine that lets you play lands from your graveyard, similar to the staple Crucible of Worlds
There is no flavour text to the contrary, but since 'untapping' is essentially the game's shorthand for being unable to attack because they are doing something else (like activating their ability), I'm going to assume that Dance of the Dead causes the resurrected creature to dance the fandango unless you pay them money
Afterlife from the Loam grabs opposing graveyard dudes and turns them into your zombies
Whenever a nontoken Zombie enters the battlefield under my control I'll create a token that's a copy of that creature
So, all creatures that cost one mana, then all creatures that cost two, and so on