M:tG card similarity search
4BBB · Legendary Enchantment Creature — Horror
Arvinox, the Mind Flail isn't a creature unless you control three or more permanents you don't own. At the beginning of your end step, exile the bottom card of each opponent's library face down. For as long as those cards remain exiled, you may look at them, you may cast permanent spells from among them, and you may spend mana as though it were mana of any color to cast those spells. 9/9
| Name | Mana | Type | Text |
|---|---|---|---|
| Sunken Citadel | Land — Cave | Sunken Citadel enters the battlefield tapped. As it enters, choose a color. {T}: Add one mana of the chosen color. {T}: Add two mana of the chosen color. Spend this mana only to activate abilities of land sources. | |
| Illusionary Mask | 2 | Artifact | {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate only as a sorcery. |
| Keeper of the Secret Lair | 1U | Legendary Creature — Merfolk Rogue | Flash You may cast Secret Lair spells as though they had flash. Secret Lair spells you cast cost {1} less to cast. 2/1 |
| Creative Technique | 4R | Sorcery | Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it.) Shuffle your library, then reveal cards from the top of it until you reveal a nonland card. Exile that card and put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost. |
| Lost Vale | Land | (Transforms from Dowsing Dagger.) {T}: Add three mana of any one color. | |
| Gilded Lotus | 5 | Artifact | {T}: Add three mana of any one color. |
| Galazeth Prismari | 2UR | Legendary Creature — Elder Dragon | Flying When Galazeth Prismari enters the battlefield, create a Treasure token. Artifacts you control have "{T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell." 3/4 |
| Sylvan Caryatid | 1G | Creature — Plant | Defender, hexproof {T}: Add one mana of any color. 0/3 |
| Atraxa, Praetors' Voice | GWUB | Legendary Creature — Phyrexian Angel Horror | Flying, vigilance, deathtouch, lifelink At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) 4/4 |
| Boarded Window | 3 | Artifact | Creatures attacking you get -1/-0. At the beginning of each end step, if you were dealt 4 or more damage this turn, exile Boarded Window. |