M:tG card similarity search
2 · Artifact
Corrupted Grafstone enters the battlefield tapped. {T}: Choose a color of a card in your graveyard. Add one mana of that color.
| Name | Mana | Type | Text | 
|---|---|---|---|
| Gem Bazaar | Land | When Gem Bazaar comes into play, choose a random color. {T}: Add to your mana pool one mana of the color last chosen. Then choose a random color. | |
| Quirion Sentinel | 1G | Creature — Elf Druid | When Quirion Sentinel enters the battlefield, add one mana of any color. 2/1 | 
| Spinning Wheel | 3 | Artifact | {T}: Add one mana of any color. {5}, {T}: Tap target creature. | 
| Meteor Crater | Land | {T}: Choose a color of a permanent you control. Add one mana of that color. | |
| Nykthos, Shrine to Nyx | Legendary Land | {T}: Add {C}. {2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.) | |
| Heraldic Banner | 3 | Artifact | As Heraldic Banner enters the battlefield, choose a color. Creatures you control of the chosen color get +1/+0. {T}: Add one mana of the chosen color. | 
| Gleemox | 0 | Artifact | {T}: Add one mana of any color. This card is banned. | 
| City of Ass | Land | City of Ass enters the battlefield tapped. {T}: Add one and one-half mana of any one color. | |
| Relic of Legends | 3 | Artifact | {T}: Add one mana of any color. Tap an untapped legendary creature you control: Add one mana of any color. | 
| Utopia Tree | 1G | Creature — Plant | {T}: Add one mana of any color. 0/2 |