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Halving Season
Enchantment
rare
If an opponent would create one or more tokens, they create half that many of each of those kinds of tokens instead, rounded down. If an opponent would put one or more counters on a permanent or player, they put half that many of each of those kinds of counters on that permanent or player instead, rounded down.
Card Kingdom
CardmarketSemantic Tags
Cares about +1/+1 counters — places, moves, doubles, or benefits from counters on creatures.
A card or token on the battlefield. See rule 110, “Permanents.”
Creates copies of tokens — populate keyword and similar effects.
Creates creature tokens, Treasure tokens, Food tokens, Clue tokens, or other token types.
Prevents token creation or punishes tokens on the battlefield.
Cares about tokens being on the battlefield — payoffs for having or creating tokens. Distinct from token_generation (which creates them).
Format Legality
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Printings (2)
| Set | Rarity | TCGplayer | Card Kingdom | Cardmarket |
|---|---|---|---|---|
| Mystery Booster 2#545 | rare | · | · | · |
| Unknown Event#UB | uncommon | · | · | · |
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
If a permanent enters the battlefield with counters on it, the effect causing the permanent to be given counters may specify which player puts those counters on it. If the effect doesn’t specify a player, the object’s controller puts those counters on it.
Playtest cards use a modified version of game symbols, such as {T} and {W}. These modified symbols should be treated as the standard symbols during play.
For many playtest cards, you’ll need to make a generous assumption that basic game rules would be updated to allow them to work. The Mystery Booster 2 Playtest Card Notes section (reproduced here in individual Gatherer rulings) provides guidance for fitting these cards into the existing rules structure.
Halving Season’s abilities won’t change the number of tokens you create or counters you place, even if you’re placing counters on permanents your opponents control.
If a player would create tokens or put counters on a permanent or player while their opponents control two or more Halving Seasons, apply the replacement effects one at a time, rounding down each time. For example, if a player would create 30 Treasure tokens while their opponents control three Halving Seasons, they would halve 30 to 15, halve 15 to 7, and then halve 7 to 3, and end up creating three Treasure tokens. Don’t spend them all on one spell!
If two or more effects attempt to modify how many counters would be put onto a permanent you control, you choose the order to apply those effects, no matter who controls the sources of those effects.
Playtest cards aren’t legal for play in any tournament format other than Mystery Booster Limited formats. On the other hand, we expect they will spice up a wide variety of non-tournament games (as long as everyone’s on the same page about using them!).