Card Codex

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17 May 2024: Card library updated.

Thorough Investigation

2W · Enchantment

Whenever you attack, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") Whenever you sacrifice a Clue, venture into the dungeon. (Enter the first room or advance to the next room.)

Similar cards

Color identity:
NameManaTypeText
Spectral Force 3GGCreature — Elemental Spirit Trample Whenever Spectral Force attacks, if defending player controls no black permanents, it doesn't untap during your next untap step. 8/8
Coral Fighters 1UCreature — Merfolk Soldier Whenever Coral Fighters attacks and isn't blocked, look at the top card of defending player's library. You may put that card on the bottom of that player's library. 1/1
Hecatomb 1BBEnchantment When Hecatomb enters the battlefield, sacrifice Hecatomb unless you sacrifice four creatures. Tap an untapped Swamp you control: Hecatomb deals 1 damage to any target.
Pillar of War 3Artifact Creature — Golem Defender As long as Pillar of War is enchanted, it can attack as though it didn't have defender. 3/3
Klauth, Unrivaled Ancient 5RGLegendary Creature — Dragon Flying, haste Whenever Klauth, Unrivaled Ancient attacks, add X mana in any combination of colors, where X is the total power of attacking creatures. Spend this mana only to cast spells. Until end of turn, you don't lose this mana as steps and phases end. 4/4
Grolnok, the Omnivore 2GULegendary Creature — Frog Whenever a Frog you control attacks, mill three cards. Whenever a permanent card is put into your graveyard from your library, exile it with a croak counter on it. You may play lands and cast spells from among cards you own in exile with croak counters on them. 3/3
Oracle en-Vec 1WCreature — Human Wizard {T}: Target opponent chooses any number of creatures they control. During that player's next turn, the chosen creatures attack if able, and other creatures can't attack. At the beginning of that turn's end step, destroy each of the chosen creatures that didn't attack this turn. Activate only during your turn. 1/1
Loyal Gyrfalcon 3WCreature — Bird Defender, flying Whenever you cast a white spell, Loyal Gyrfalcon loses defender until end of turn. 3/3
Ornery Dilophosaur 3GCreature — Dinosaur Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Whenever Ornery Dilophosaur attacks, if you control a creature with power 4 or greater, Ornery Dilophosaur gets +2/+2 until end of turn. 2/2
Éomer, Marshal of Rohan 2RRLegendary Creature — Human Knight Haste Whenever one or more other attacking legendary creatures you control die, untap all creatures you control. After this phase, there is an additional combat phase. This ability triggers only once each turn. 4/4
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