Across the Multiverse [Unknown Event] CSP Set: Dungeons & Dragons: Adventures

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Promos Type: Legendary Artifact Rarity: Rare Cost: {U} You may choose not to untap The Blackstaff of Waterdeep during your untap step

Set: Zendikar Expeditions Type: Legendary Land Rarity: Mythic Colorless Eldrazi spells you cast cost {2} less to cast

This effect doesn't remove Green Ward

Set: Battle for Zendikar Prerelease Promos Type: Land — Island Swamp Rarity: Rare ({T}: Add {U} or {B}

The Overmind also requires that

Across the Multiverse [Unknown Event] CSP Set: Dungeons & Dragons: AdventuresSet: Unknown Event Type: Enchantment Rarity: Common Nontoken creatures you control which aren't from the MOM main set get +1 +0 and gain haste. (This includes Multiverse Legends, playtest cards, cards from Mystery Booster, and anything else not from the MOM main set.)