Buy / view
TCGplayer is an affiliate link — we may earn a commission, at no extra cost to you.
Sealock Monster
Theros (THS) · #62 · uncommon · mtg
Creature — Octopus
This creature can't attack unless defending player controls an Island.
{5}{U}{U}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)
When this creature becomes monstrous, target land becomes an Island in addition to its other types.
DeckSpec Pricei
Non-foil$0.07
Foil$0.40
Condition
Weighted composite · smoothed against one-off swings.
Current prices
Condition
FoilNM
| cardkingdom | $0.49 | 2026-07-24 |
| Cardmarket | ≈$0.38 | 2026-08-08 |
| TCGplayer | $0.41 | 2026-08-08 |
Non-foilNM
| cardkingdom | $0.35 | 2026-07-24 |
| Cardmarket | ≈$0.13 | 2026-08-08 |
| MTGO | ≈$0.03 | 2026-08-08 |
| TCGplayer | $0.06 | 2026-08-08 |
Non-USD sources (e.g. Cardmarket, EUR) are shown converted to USD at €1 ≈ $1.15 — indicative, not an exact quote.
Prices update daily · last checked Sun Aug 09. Indicative, not offers — how we price.
Price history (last 180 days)
Condition key
NM Near MintLP Lightly PlayedMP Moderately PlayedHP Heavily PlayedDMG Damaged
Recorded prices are Near Mint; LP–DMG are estimated from standard hobby multipliers (foils discounted more steeply) — a guide, not a market quote.
Add to collection
Watch price
Other printings (2)
Cards like this
Chillerpillar
MH1 #43
$0.13
Chillerpillar
J22 #280
$0.15
Triton Shorethief
THS #70
$0.06
Prescient Chimera
THS #59
$0.06
Omenspeaker
THS #57
$0.05
Benthic Giant
THS #41
$0.04
Vaporkin
THS #72
$0.04
Horizon Scholar
THS #51
$0.09
Wavecrash Triton
THS #74
$0.10
Breaching Hippocamp
THS #43
$0.12
Prognostic Sphinx
THS #60
$0.12
Meletis Charlatan
THS #54
$0.15
Complete the set — Theros
You have 0 of 249 (0%)Most valuable cards in this set
THS #223
Nykthos, Shrine to Nyx
$52.15
THS #135
Purphoros, God of the Forge
$29.94
THS #85
Erebos, God of the Dead
$11.15
THS #65
Swan Song
$11.02
THS #166
Nylea, God of the Hunt
$10.78
THS #110
Whip of Erebos
$7.91
THS #107
Thoughtseize
$6.75
THS #196
Medomai the Ageless
$4.74
THS #17
Heliod, God of the Sun
$4.43
THS #153
Bow of Nylea
$3.83
THS #66
Thassa, God of the Sea
$3.79
THS #162
Mistcutter Hydra
$3.14