One common way I've seen him get played around is with self-targeting cheap instants and sorceries that replace themselves, like Crimson Wisps that can draw another card, hopefully another cantrip, and then you can keep on going
(Thalia adds the white in the team-up.) This first version is trying to be as similar mechanically to its last two cards as possible: it references lands, it can gain deathtouch, and it has a sacrifice tied to card drawing
Reliquary Tower taps for one Colorless mana, as do a lot of Lands on this list, but the effect it has is nothing to do with mana at all
The Green MTG Battle card Invasion of Zendikar has an effect like a ramp instant or sorcery, but what happens next is very unusual
Primeval Titan is the main win condition for Amulet Titan by representing a large attacker and a tutor for various lands, including the combo finisher of Valakut, the Molten Pinnacle in combination with Dryad of the Ilysian Grove