Coming and/or Going Discard (sample: Ravenous Rats) I play a permanent, usually a creature, that causes a discard when it comes into and/or leaves play
We're talking turning a Boltwave into three Ancestral Recalls
For example, the Professors Research card allows you to draw two additional cards on your turn whilst a Gym Leader card, such as Sabrina, allows you to swap out your opponents active Pokmon for one on their bench
In addition to Amareth, the LustrousAmareth, the Lustrous checking the top of the library on each activation of the "ultimate", if you create a bunch of Shards with a lot of mana into X, that's a bunch of Amareth triggers to allow you to fill your hand, especially if you have a way to curate the top of your library in between the resolution of each trigger, such as SoothsayingSoothsaying
This ranking is more for any 5-color card
Ramunap Excavator allows Maverick to consistently make land drops, apply Wasteland pressure, and generate card advantage, particularly when paired with lands like Horizon Canopy