M:tG card similarity search
2U · Sorcery
Each player discards any number of cards, then draws that many cards. Draw a card.
| Name | Mana | Type | Text | 
|---|---|---|---|
| All-Seeing Arbiter | 4UU | Creature — Avatar | Flying Whenever All-Seeing Arbiter enters the battlefield or attacks, draw two cards, then discard a card. Whenever you discard a card, target creature an opponent controls gets -X/-0 until your next turn, where X is the number of different mana values among cards in your graveyard. 5/4 | 
| Archivist | 2UU | Creature — Human Wizard | {T}: Draw a card. 1/1 | 
| Azure Mage | 1U | Creature — Human Wizard | {3}{U}: Draw a card. 2/1 | 
| Earsplitting Rats | 3B | Creature — Rat | When Earsplitting Rats enters the battlefield, each player discards a card. Discard a card: Regenerate Earsplitting Rats. 2/1 | 
| Thirst for Knowledge | 2U | Instant | Draw three cards. Then discard two cards unless you discard an artifact card. | 
| Refocus | 1U | Instant | Untap target creature. Draw a card. | 
| Mind Bomb | U | Sorcery | Each player may discard up to three cards. Mind Bomb deals damage to each player equal to 3 minus the number of cards they discarded this way. | 
| Skeleton Key | 1 | Artifact — Equipment | Equipped creature has skulk. (It can't be blocked by creatures with greater power.) Whenever equipped creature deals combat damage to a player, you may draw a card. If you do, discard a card. Equip {2} | 
| Zephyr Boots | 1 | Artifact — Equipment | Equipped creature has flying. Whenever equipped creature deals combat damage to a player, draw a card, then discard a card. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.) | 
| Ruin Grinder | 5R | Artifact Creature — Construct | Menace When Ruin Grinder dies, each player may discard their hand and draw seven cards. Mountaincycling {2} ({2}, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.) 7/4 |