M:tG card similarity search
1W · Artifact — Equipment
Equipped creature gets +1/+1 and has vigilance. Whenever equipped creature attacks, look at the top six cards of your library. You may reveal a card that shares a creature type with that creature from among them and put it into your hand. Put the rest on the bottom of your library in a random order. Equip {1}
| Name | Mana | Type | Text | 
|---|---|---|---|
| Contested War Zone | Land | Whenever a creature deals combat damage to you, that creature's controller gains control of Contested War Zone. {T}: Add {C}. {1}, {T}: Attacking creatures get +1/+0 until end of turn. | |
| Instrument of the Bards | G | Legendary Artifact | At the beginning of your upkeep, you may put a harmony counter on Instrument of the Bards. {3}{G}, {T}: Search your library for a creature card with mana value equal to the number of harmony counters on Instrument of the Bards, reveal it, and put it into your hand. If that card is legendary, create a Treasure token. Then shuffle. | 
| Keranos, God of Storms | 3UR | Legendary Enchantment Creature — God | Indestructible As long as your devotion to blue and red is less than seven, Keranos isn't a creature. Reveal the first card you draw on each of your turns. Whenever you reveal a land card this way, draw a card. Whenever you reveal a nonland card this way, Keranos deals 3 damage to any target. 6/5 | 
| Ascendant Evincar | 4BB | Legendary Creature — Phyrexian Vampire Noble | Flying (This creature can't be blocked except by creatures with flying or reach.) Other black creatures get +1/+1. Nonblack creatures get -1/-1. 3/3 | 
| Concealed Weapon | 1R | Artifact — Equipment | Equipped creature gets +3/+0. Disguise {2}{R} (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.) When Concealed Weapon is turned face up, attach it to target creature you control. Equip {1}{R} | 
| Goblin Secret Agent | 2R | Creature — Goblin Rogue | First strike At the beginning of your upkeep, reveal a card from your hand at random. 2/2 | 
| Gempalm Strider | 1G | Creature — Elf | Cycling {2}{G}{G} ({2}{G}{G}, Discard this card: Draw a card.) When you cycle Gempalm Strider, Elf creatures get +2/+2 until end of turn. 2/2 | 
| Chandra's Firemaw | 3RR | Creature — Hellion | Haste When Chandra's Firemaw enters the battlefield, you may search your library and/or graveyard for a card named Chandra, Flame's Catalyst, reveal it, and put it into your hand. If you search your library this way, shuffle. 4/2 | 
| Impromptu Raid | 3R/G | Enchantment | {2}{R/G}: Reveal the top card of your library. If it isn't a creature card, put it into your graveyard. Otherwise, put that card onto the battlefield. That creature gains haste. Sacrifice it at the beginning of the next end step. | 
| Crenellated Wall | 4 | Artifact Creature — Wall | Defender (This creature can't attack.) {T}: Target creature gets +0/+4 until end of turn. 0/4 |