The Prismatic Bridge has you reveal cards from the top of your deck until you find a creature or planeswalker, putting that card onto the battlefield under your control
Card choices prioritize how pieces interact with your commander and with each other (e.g., self-mill as draw, modal spells for double Kess value) instead of blindly jamming the usual staples
Consider, Gwafa Hazid is a Pacifism on a body that you can activate once you have the mana
1 Mauhr, Uruk-hai Captain
Provided you've taken the time to perfect your marinade
This versatile trick excels in combat, especially when boosting valiant or double-striking Mice, but also pulls double duty as a source of card advantage, digging for lands or removal as needed