It's been a staple in Legacy and beyond for a long time, and its appearance in Modern is just as strong
Especially since many of these bulk cards dont see as much game play as the higher echelon Magic staples like The Great Henge, Rhystic Study and Ancient Tomb
However, if a Lion Umbra you control is attached to a creature you don't control and that creature has no Auras controlled by that creature's controller attached to it, no Equipment attached to it, and no counters on it, Lion Umbra will be put into its owner's graveyard due to being attached to an illegal object the next time state-based actions are performed
Each preconstructed deck is ready-to-play right out of the box and comes with a Collector Booster Sample pack containing 2 special alt-frame cards, including 1 Rare or Mythic Rare card
Honorable Mention #2 - Shadowmoor Swamp by Lars Grant-West
It can shut down any of your opponents spells that let them take bonus turns, locking them out of any sort of combo shenanigans they might have up their sleeves
