Ixalan

Dragonskull Summit | Land | | Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}. | Alayna Danner

Rootbound Crag | Land | | Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest. {T}: Add {R} or {G}. | Grzegorz Rutkowski

Mountain | Basic Land | Mountain | ({T}: Add {R}.) | Christine Choi

Mountain | Basic Land | Mountain | ({T}: Add {R}.) | Titus Lunter

Mountain | Basic Land | Mountain | ({T}: Add {R}.) | Raoul Vitale

Mountain | Basic Land | Mountain | ({T}: Add {R}.) | Min Yum