Is Case of the Locked Hothouse good in Commander?

Case of the Locked Hothouse

Enchantment — Case

You may play an additional land on each of your turns.
To solve — You control seven or more lands. (If unsolved, solve at the beginning of your end step.)
Solved — You may look at the top card of your library any time, and you may play lands and cast creature and enchantment spells from the top of your library.

CMC: 4
Mana cost
Color identity: G
Rarity: rare
Set: Murders at Karlov Manor Promos
Price: —
EDHREC rank: #1321

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Case of the Locked Hothouse puts a land-per-upkeep engine on the table the turn it comes down, and solving it unlocks one of the most powerful land-cheating effects in green. The solve condition is trivially easy in any land-matters shell — Radha, Heir to Keld decks can crack it on curve without trying — and once you're putting lands into play from the top of your library every upkeep, cards like Glacial Chasm become free to maintain and your mana advantage compounds fast.

Best Commanders

Commanders with the highest synergy

Radha, Heir to Keld

37.7% of decks · synergy 0.32

Radha, Heir to Keld plays lands aggressively and attacks early, meaning Case of the Locked Hothouse is often solved by turn four without any extra effort — just play your game and collect the reward.

Flubs, the Fool

35.5% of decks · synergy 0.31

Flubs, the Fool cares about piling up permanents and sustained board presence, and Case of the Locked Hothouse delivers both by putting extra lands into play every upkeep while sitting as a permanent itself.

Bello, Bard of the Brambles

35.9% of decks · synergy 0.30

Bello, Bard of the Brambles wants as many lands entering the battlefield as possible to fuel his Forest-matters payoffs, and Case of the Locked Hothouse provides a repeatable land-drop engine that keeps accelerating the plan.

Kellan, the Kid

26.2% of decks · synergy 0.24

Kellan, the Kid benefits from cheap enchantments that generate ongoing value, and Case of the Locked Hothouse fits that profile exactly — low entry cost, passive land generation, and a solve condition Kellan's aggressive gameplan reaches naturally.

Bonny Pall, Clearcutter

26.9% of decks · synergy 0.23

Bonny Pall, Clearcutter runs an oversized-permanent gameplan that needs consistent mana acceleration, and Case of the Locked Hothouse provides that by converting library cards into land drops ahead of schedule.

Format Analysis

Where it lives, where it can’t

Format	Verdict
commander	legal
legacy	legal
modern	legal
pioneer	legal
standard	legal
vintage	legal
pauper	not legal
oathbreaker	legal

In Commander, Case of the Locked Hothouse earns its slot in any deck that plans to play multiple lands per turn — it solves itself passively and then acts as a permanent Explore trigger every upkeep for the rest of the game. Modern and Pioneer have the raw land-count density where the solve condition is realistic, but those formats move too fast for a three-mana enchantment that doesn't immediately affect the board. Legacy and Vintage are similarly inhospitable — the card is too slow and the payoff too incremental against turn-one threats. Standard is where it sees the most non-Commander competitive consideration, since the format's lower power ceiling makes sustained land advantage meaningful and the enchantment synergies are plentiful.

Key Combos

Combo lines featuring this card

4,350 decks