M:tG card similarity search
3R · Creature — Elemental
At the beginning of your upkeep, put a -1/-1 counter on Magmaroth. Whenever you cast a noncreature spell, remove a -1/-1 counter from Magmaroth. 5/5
| Name | Mana | Type | Text | 
|---|---|---|---|
| Insight | 2U | Enchantment | Whenever an opponent casts a green spell, you draw a card. | 
| Skulduggery | B | Instant | Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1. | 
| Mind Maggots | 3B | Creature — Insect | When Mind Maggots enters the battlefield, discard any number of creature cards. For each card discarded this way, put two +1/+1 counters on Mind Maggots. 2/2 | 
| Skull Collector | 1BB | Creature — Ogre Warrior | At the beginning of your upkeep, return a black creature you control to its owner's hand. {1}{B}: Regenerate Skull Collector. 3/3 | 
| Stronghold Machinist | 2U | Creature — Human Spellshaper | {U}{U}, {T}, Discard a card: Counter target noncreature spell. 1/1 | 
| Misfortune | 1BRG | Sorcery | An opponent chooses one — • You put a +1/+1 counter on each creature you control and gain 4 life. • You put a -1/-1 counter on each creature that player controls and Misfortune deals 4 damage to that player. | 
| Hooded Hydra | XGG | Creature — Snake Hydra | Hooded Hydra enters the battlefield with X +1/+1 counters on it. When Hooded Hydra dies, create a 1/1 green Snake creature token for each +1/+1 counter on it. Morph {3}{G}{G} As Hooded Hydra is turned face up, put five +1/+1 counters on it. 0/0 | 
| Bubble Smuggler | 1U | Creature — Octopus Fish | Disguise {5}{U} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) As Bubble Smuggler is turned face up, put four +1/+1 counters on it. 2/1 | 
| Ooze Flux | 3G | Enchantment | {1}{G}, Remove one or more +1/+1 counters from among creatures you control: Create an X/X green Ooze creature token, where X is the number of +1/+1 counters removed this way. | 
| Quarantine Field | XXWW | Enchantment | Quarantine Field enters the battlefield with X isolation counters on it. When Quarantine Field enters the battlefield, for each isolation counter on it, exile up to one target nonland permanent an opponent controls until Quarantine Field leaves the battlefield. |