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Similar cards to Thinking Cap (blue, artifact, exile top 3 cards for card draw):
1. Arcane Spyglass (blue, exile top card, may play it)
2. Hedron Archive (artifact, card draw by sacrificing)
3. Mazemind Tome (artifact, draw via charge counters)
Reason: All are blue or artifacts, offer repeatable or conditional card draw/exile mechanics.
| Color: |  |
| Identifies: | |
| Cost: |
 |
| Rarity: | Common |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: | 
       |
| Layout: | Normal |
| Rank: |
| Seller | Price |
|---|---|
| Tcgplayer | 0.09 USD / 0.47 USD |
| Cardmarket | 0.1 EUR / 0.3 EUR |
| Cardkingdom | 0.35 USD |
| Cardsphere | 0.23 USD |
| Manapool | 0.92 USD 3.23 USD 12.49 USD |
, 
,Sacrificea land: Draw a card and put a chargecounteron this artifact.
Remove three charge counters from this artifact: Draw a card. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Special |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
  |
| Layout: | Normal |
| Rank: |
| Seller | Price |
|---|---|
| Tcgplayer | 0.37 USD / 11.57 USD |
| Cardmarket | 0.32 EUR / 6.17 EUR |
| Cardkingdom | 0.99 USD / 9.99 USD |
| Cardsphere | 0.34 USD |
| Manapool | 0.92 USD 3.23 USD 12.49 USD |
: Add .
, ,Sacrificethis artifact: Draw two cards. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Rare |
| Converted Cost: | 2 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: |
| Seller | Price |
|---|
, Put a pagecounteron this artifact: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
, , Put a pagecounteron this artifact: Draw a card.
When there are four or more page counters on this artifact, exile it. If you do, you gain 4 life. | Color: | |
| Identifies: | |
| Cost: |
 |
| Rarity: | Common |
| Converted Cost: | 1 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: | |
| Saltiness: |
| Seller | Price |
|---|---|
| Tcgplayer | 0.06 USD / 0.04 USD |
| Cardmarket | 0.05 EUR / 0.12 EUR |
| Cardkingdom | 0.35 USD / 0.49 USD |
| Cardsphere | 0.04 USD |
| Manapool | 0.92 USD 3.23 USD 12.49 USD |
Equip 
(: Attach to target creature you control. Equip only as a sorcery.) | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Common |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: |
| Seller | Price |
|---|---|
| Tcgplayer | 0.09 USD / 0.47 USD |
| Cardmarket | 0.1 EUR / 0.3 EUR |
| Cardkingdom | 0.35 USD |
| Cardsphere | 0.23 USD |
| Manapool | 0.92 USD 3.23 USD 12.49 USD |
, ,Sacrificea land: Draw a card and put a chargecounteron this artifact.
Remove three charge counters from this artifact: Draw a card. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Special |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: |
| Seller | Price |
|---|---|
| Tcgplayer | 0.37 USD / 11.57 USD |
| Cardmarket | 0.32 EUR / 6.17 EUR |
| Cardkingdom | 0.99 USD / 9.99 USD |
| Cardsphere | 0.34 USD |
| Manapool | 0.92 USD 3.23 USD 12.49 USD |
: Add .
, ,Sacrificethis artifact: Draw two cards. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Rare |
| Converted Cost: | 2 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: |
| Seller | Price |
|---|
, Put a pagecounteron this artifact: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
, , Put a pagecounteron this artifact: Draw a card.
When there are four or more page counters on this artifact, exile it. If you do, you gain 4 life. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Common |
| Converted Cost: | 1 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: | |
| Saltiness: |
| Seller | Price |
|---|---|
| Tcgplayer | 0.06 USD / 0.04 USD |
| Cardmarket | 0.05 EUR / 0.12 EUR |
| Cardkingdom | 0.35 USD / 0.49 USD |
| Cardsphere | 0.04 USD |
| Manapool | 0.92 USD 3.23 USD 12.49 USD |
Equip (: Attach to target creature you control. Equip only as a sorcery.) 
