M:tG card similarity search
2BBR · Legendary Creature — Demon Mercenary
Flying, trample Whenever you sacrifice another creature, exile cards equal to its mana value from the top of target player's library. Until your next end step, you may play those cards, and mana of any type can be spent to cast those spells. Sacrifice another creature: Rakdos, the Muscle gains indestructible until end of turn. Tap it. Activate only once each turn. 6/5
| Name | Mana | Type | Text | 
|---|---|---|---|
| Precognition Field | 3U | Enchantment | You may look at the top card of your library any time. You may cast instant and sorcery spells from the top of your library. {3}: Exile the top card of your library. | 
| Hellhole Rats | 2BR | Creature — Rat | Haste When Hellhole Rats enters the battlefield, target player discards a card. Hellhole Rats deals damage to that player equal to that card's mana value. 2/2 | 
| Unpredictable Cyclone | 3RR | Enchantment | If a cycling ability of another nonland card would cause you to draw a card, instead exile cards from the top of your library until you exile a card that shares a card type with the cycled card. You may cast that card without paying its mana cost. Then put the exiled cards that weren't cast this way on the bottom of your library in a random order. Cycling {2} ({2}, Discard this card: Draw a card.) | 
| Realmwalker | 2G | Creature — Shapeshifter | Changeling (This card is every creature type.) As Realmwalker enters the battlefield, choose a creature type. You may look at the top card of your library any time. You may cast creature spells of the chosen type from the top of your library. 2/3 | 
| Sunglasses of Urza | 3 | Artifact | You may spend white mana as though it were red mana. | 
| Zhulodok, Void Gorger | 5C | Legendary Creature — Eldrazi | Colorless spells you cast from your hand with mana value 7 or greater have "Cascade, cascade." (When you cast one, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order. Then do it again.) 7/4 | 
| Nessian Wilds Ravager | 4GG | Creature — Hydra | Tribute 6 (As this creature enters the battlefield, an opponent of your choice may put six +1/+1 counters on it.) When Nessian Wilds Ravager enters the battlefield, if tribute wasn't paid, you may have Nessian Wilds Ravager fight another target creature. (Each deals damage equal to its power to the other.) 6/6 | 
| Emperor Apatzec Intli IV | RGW | Legendary Creature — Human Noble | Whenever another creature enters the battlefield under your control, that creature perpetually gains haste if its power is 4 or greater. If its toughness is 4 or greater, you gain 4 life. If its mana value is 4 or greater, seek a creature card. 3/4 | 
| Shadows' Verdict | 3BB | Sorcery | Exile all creatures and planeswalkers with mana value 3 or less from the battlefield and all creature and planeswalker cards with mana value 3 or less from all graveyards. | 
| Woodcloaker | 5G | Creature — Elf | Morph {2}{G}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Woodcloaker is turned face up, target creature gains trample until end of turn. 3/3 |