Chromium [Legends] Core Set 2020 Prerelease Promos the player can activate mana

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

Set: Magic 2010 Type: Artifact Rarity: Rare Cost: {5} Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it

Set: Secret Lair Drop Series Type: Enchantment Rarity: Rare Cost: {G} Whenever an opponent plays a land

(A copy of a creature spell becomes a token

Set: Unlimited Edition Type: Creature — Merfolk Rarity: Rare Cost: {U}{U} Other Merfolk get +1/+1 and have islandwalk

Chromium [Legends] Core Set 2020 Prerelease Promos the player can activate manaSet: Legends Type: Legendary Creature Elder Dragon Rarity: Rare Cost: {2}{W}{W}{U}{U}{B}{B} Flying Rampage 2 (Whenever this creature becomes blocked, it gets +2 +2 until end of turn for each creature blocking it beyond the first.) At the beginning of your upkeep, sacrifice Chromium unless you pay {W}{U}{B}.