M:tG card similarity search
5R · Creature — Beholder
Whenever a creature an opponent controls attacks one of your opponents, double its power until end of turn. {X}{X}{R}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.) When Death Kiss becomes monstrous, goad up to X target creatures your opponents control. 5/5
| Name | Mana | Type | Text |
|---|---|---|---|
| Bog Gnarr | 4G | Creature — Beast | Whenever a player casts a black spell, Bog Gnarr gets +2/+2 until end of turn. 2/2 |
| Rith, Liberated Primeval | 2RGW | Legendary Creature — Dragon | Flying, ward {2} Other Dragons you control have ward {2}. At the beginning of your end step, if a creature or planeswalker an opponent controlled was dealt excess damage this turn, create a 4/4 red Dragon creature token with flying. 5/5 |
| Snakeform | 2G/U | Instant | Until end of turn, target creature loses all abilities and becomes a green Snake with base power and toughness 1/1. Draw a card. |
| Portal Mage | 2U | Creature — Human Wizard | Flash When Portal Mage enters the battlefield during the declare attackers step, you may reselect which player or permanent target attacking creature is attacking. (It can't attack its controller or its controller's planeswalkers.) 2/2 |
| Astral Arena | Plane — Kolbahan | No more than one creature can attack each combat. No more than one creature can block each combat. Whenever chaos ensues, Astral Arena deals 2 damage to each creature. | |
| Martyr of Spores | G | Creature — Human Shaman | {1}, Reveal X green cards from your hand, Sacrifice Martyr of Spores: Target creature gets +X/+X until end of turn. 1/1 |
| Runed Arch | 3 | Artifact | Runed Arch enters the battlefield tapped. {X}, {T}, Sacrifice Runed Arch: X target creatures with power 2 or less can't be blocked this turn. |
| Tember City | Plane — Kinshala | Whenever a player taps a land for mana, Tember City deals 1 damage to that player. Whenever chaos ensues, each other player sacrifices a nonland permanent. | |
| Renegade Doppelganger | 1U | Creature — Shapeshifter | Whenever another creature enters the battlefield under your control, you may have Renegade Doppelganger become a copy of that creature until end of turn. (If it does, it loses this ability for the rest of the turn.) 0/1 |
| Crookclaw Transmuter | 3U | Creature — Bird Wizard | Flash Flying When Crookclaw Transmuter enters the battlefield, switch target creature's power and toughness until end of turn. 3/1 |