Search
Detection Tower
Land
rare
: Add . , : Until end of turn, your opponents and creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.
Card Kingdom
CardmarketSemantic Tags
A keyword ability that may let a player cast a random extra spell for no cost. See rule 702.85, “Cascade.”
A permanent or effect that makes spells or abilities cheaper to cast or activate.
A keyword ability that precludes a permanent or player from being targeted by an opponent. See rule 702.11, “Hexproof.”
A permanent with a repeatable activated ability that converts excess mana into value.
A card or token on the battlefield. See rule 110, “Permanents.”
Discourages opponents from attacking you with taxes, penalties, and deterrents.
A keyword ability that provides a range of benefits against objects with a specific quality. See rule 702.16, “Protection.”
A keyword ability that provides a range of benefits against objects with a specific quality. See rule 702.16, “Protection.”
Equipment, aura, or spell that protects key permanents from removal.
Format Legality
Price history
Loading price history…
Printings (2)
| Set | Rarity | TCGplayer | Card Kingdom | Cardmarket |
|---|---|---|---|---|
| Core Set 2019#249 | rare | · | · | · |
| Core Set 2019 Promos#249s | rare | · | · | · |
Related Rules
If an ability would produce one or more mana of an undefined type, it produces no mana instead.
Some abilities produce mana based on the type of mana another permanent or permanents “could produce.” The type of mana a permanent could produce at any time includes any type of mana that an ability of that permanent would produce if the ability were to resolve at that time, taking into account any applicable replacement effects in any possible order. Ignore whether any costs of the ability could or could not be paid. If that permanent wouldn’t produce any mana under these conditions, or no type of mana can be defined this way, there’s no type of mana it could produce.
To “tap [a permanent] for mana” is to activate a mana ability of that permanent that includes the {T} symbol in its activation cost. See rule 605, “Mana Abilities.”
An ability that triggers whenever a permanent “is tapped for mana” or is tapped for mana of a specified type triggers whenever such a mana ability resolves and produces mana or the specified type of mana.
A replacement effect that applies if a permanent “is tapped for mana” or tapped for mana of a specific type and/or amount modifies the mana production event while such an ability is resolving and producing mana or the specified type and/or amount of mana.
If an object’s enters-the-battlefield triggered ability or replacement effect refers to X, and the spell that became that object as it resolved had a value of X chosen for any of its costs, the value of X for that ability is the same as the value of X for that spell, although the value of X for that permanent is 0. This is an exception to rule 107.3i.
The tap symbol is {T}. The tap symbol in an activation cost means “Tap this permanent.” A permanent that’s already tapped can’t be tapped again to pay the cost. A creature’s activated ability with the tap symbol in its activation cost can’t be activated unless the creature has been under its controller’s control continuously since their most recent turn began. See rule 302.6.
The untap symbol is {Q}. The untap symbol in an activation cost means “Untap this permanent.” A permanent that’s already untapped can’t be untapped again to pay the cost. A creature’s activated ability with the untap symbol in its activation cost can’t be activated unless the creature has been under its controller’s control continuously since their most recent turn began. See rule 302.6.
Rulings
Because Detection Tower’s last ability doesn’t change the characteristics of any permanents, the set of creatures affected by it is constantly updated. Creatures that come under your opponents’ control later in the turn can be targeted as though they didn’t have hexproof.
Creatures your opponents control with “hexproof from [quality]” abilities can be targeted as though they didn’t have those abilities as well.
Your opponents and creatures your opponents control don’t actually lose hexproof, although you will ignore hexproof for purposes of choosing targets of spells and abilities you control.