This time, however, our opponents first play is a 3/3 on turn three
Sanctum Plowbeast, Jhessian Zombies, Pale Recluse, Igneous Pouncer and Valley Rannet aren't exactly Commander staples, but they're all two-color cards and they can each be cycled for one of two basic lands for the same cost of two mana
Anytime a land comes into play under your control, you get to draw a card and gain a life, giving you card advantage and sustain all in one
They do nothing on their own, so only run them once your source-and-payoff core is solid
The key thing to build around is the other than your hand line, so cards with foretell (Behold the Multiverse, Delayed Blast Fireball) and flashback (Think Twice, Galvanic Iteration) are excellent