M:tG card similarity search
4UB · Legendary Creature — Beholder
At the beginning of your upkeep, choose target opponent. Until end of turn, that player can't cast spells, you may look at the top card of their library any time, you may play the top card of their library, and you may spend mana as though it were mana of any color to cast spells this way. 5/6
| Name | Mana | Type | Text |
|---|---|---|---|
| R&D's Secret Lair | Legendary Land | Play cards as written. Ignore all errata. {T}: Add {C}. (This mana is still added to your mana pool.) | |
| Tinybones, the Pickpocket | B | Legendary Creature — Skeleton Rogue | Deathtouch Whenever Tinybones, the Pickpocket deals combat damage to a player, you may cast target nonland permanent card from that player's graveyard, and mana of any type can be spent to cast that spell. 1/1 |
| Diamond Mare | 2 | Artifact Creature — Horse | As Diamond Mare enters the battlefield, choose a color. Whenever you cast a spell of the chosen color, you gain 1 life. 1/3 |
| Skyclave Invader | Creature — Phyrexian Merfolk Scout | Flying When this creature transforms into Skyclave Invader, look at the top card of your library. If it's a land card, you may put it onto the battlefield. If you don't put the card onto the battlefield, put it into your hand. 2/4 | |
| Prism Ring | 1 | Artifact | As Prism Ring enters the battlefield, choose a color. Whenever you cast a spell of the chosen color, you gain 1 life. |
| Thought Prison | 5 | Artifact | Imprint — When Thought Prison enters the battlefield, you may have target player reveal their hand. If you do, choose a nonland card from it and exile that card. Whenever a player casts a spell that shares a color or mana value with the exiled card, Thought Prison deals 2 damage to that player. |
| Gwenna, Eyes of Gaea | 2G | Legendary Creature — Elf Druid Scout | {T}: Add two mana in any combination of colors. Spend this mana only to cast creature spells or activate abilities of a creature or creature card. Whenever you cast a creature spell with power 5 or greater, put a +1/+1 counter on Gwenna, Eyes of Gaea and untap it. 2/3 |
| Pandora's Box | 5 | Artifact | {3}, {T}: Choose a random summon card from all players' decks. For each player, flip a coin. If the flip ends up heads, put a token creature into play and treat it as though an exact copy of the chosen summon card were just played. |
| Serra Avenger | WW | Creature — Angel | You can't cast this spell during your first, second, or third turns of the game. Flying, vigilance 3/3 |
| Zoologist | 3G | Creature — Human Druid | {3}{G}, {T}: Reveal the top card of your library. If it's a creature card, put it onto the battlefield. Otherwise, put it into your graveyard. 1/2 |