Proportional effect

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Proportional effects are card effects that consume the player's available mana and have their effects increased in proportion.

Proportional effects are found on "Forbidden" cards (mostly spells with a mana Cost of 0) and work by consuming all available mana when played.

The Proportional effect of Living Mana will also destroy the remaining crystals after it's been casted.

Notes[edit | edit source]

  • Playing a card with a proportional effect consumes mana in two separate ways: one is the mana Cost of the card itself, the other is the card's "Spend all your Mana" text.
  • Effects which trigger based on the Cost of a spell or minion will count the Cost of the card itself, not including any mana consumed by the proportional effect.
Example: If you have 10 mana and Atiesh equipped, playing Forbidden Flame will deal 10 damage but still summon a 0-Cost minion.[1]
Example: Playing Forbidden Ancient at 10 mana will produce a 10/10 minion, but Evolve will still transform it into a random 2-Cost minion.
  • The mana Cost of a card with a proportional effect can be modified as usual by Cost-modification effects.
    • The Cost of a card cannot be negative: thus, Cost-reduction effects like Sorcerer's Apprentice would usually have no effect on Forbidden spells (since they already cost 0 mana), but they can contrast Cost-increasing effects like Loatheb.[2]
    • Cost-modification effects cannot alter the proportional effect itself, since this does not have a Cost but simply consumes all available mana.
  • After the Cost of a card with a proportional effect has been paid, all the player's remaining available mana will be consumed as part of its effect, and the card's effect will be increased in proportion.[3]
Example: Playing Forbidden Shaping with 10 available mana after an opponent's Loatheb would still leave the caster with 0 mana, but would only summon a 5-Cost minion.[4]
  • Proportional effects always consume all the player's available mana (which can range from 0 to 10[5]), even if it is not possible to produce an effect of that magnitude.
Example: Playing Forbidden Ritual with 10 available mana will consume 10 mana even though it can never summon more than 7 Icky Tentacles. Forbidden Ritual can be played even on a full board, still consuming all available mana although no minion will be summoned.
  • Since the proportional effect itself is part of the card's text, it only consumes the remaining mana if the card is successfully played.
Example: If Forbidden Flame is countered by Counterspell, no extra mana will be consumed.
  • Cards with proportional effects can be played even when there is no mana left to consume.[6]
Example: Casting Forbidden Healing when there is 0 available mana will not heal the target, but will still trigger Violet Teacher or Wild Pyromancer.

Strategy[edit | edit source]

  • Players can determine how much mana to spend on a proportional effect by expending mana in other ways first, leaving a smaller amount remaining for the proportional effect to consume.
  • Proportional effect cards cannot be followed with the playing of any other cards in the same turn, unless they are 0-Mana cards (e.g. Moonfire, Target Dummy), or following regaining Mana through effects such as The Coin or Innervate. This makes it wise to carefully assess the desired sequence of events, make use of your Hero Power and possibly play other cards, before finally playing the proportional effect card.

Cards[edit | edit source]

Name / Desc Rarity Type Subtype Class Cost Atk HP Description
Forbidden Ritual Rare Spell Warlock 0 Spend all your Mana. Summon that many 1/1 Tentacles. Actually, C'Thun gives his full support for this ritual.
Forbidden Ancient Epic Minion General Druid 1 1 1 Battlecry: Spend all your Mana. Gain +1/+1 for each mana spent. This Ancient was banned from the local tavern after tucking a 'Dr. Boom' up its sleeve.
Forbidden Flame Epic Spell Mage 0 Spend all your Mana. Deal that much damage to a minion. WARNING: This flame is not to be used unless you are a licensed acolyte of the Old Gods.
Forbidden Healing Epic Spell Paladin 0 Spend all your Mana. Heal for double the mana you spent. No one's quite sure why it's forbidden. And yes, that should make you nervous.
Forbidden Shaping Epic Spell Priest 0 Spend all your Mana. Summon a random minion that costs that much. But the minion arrives covered in goo.
Showing all 5 cards
Forbidden Ritual(35217).png
Forbidden Ancient(35213).png
Forbidden Flame(33124).png
Forbidden Healing(33126).png
Forbidden Shaping(33125).png

Trivia[edit | edit source]

  • Proportional effects currently represent the only effects that consume the player's mana. Mana is normally consumed by the base cost of playing a card or using a Hero Power.

Patch changes[edit | edit source]

See also[edit | edit source]

References[edit | edit source]

  1. Yong Woo on Twitter. (2016-09-12). 
  2. PlayHearthstone on Twitter. (2016-03-17). 
  3. PlayHearthstone on Twitter. (2016-04-07). 
  4. PlayHearthstone on Twitter. (2016-03-17). 
  5. PlayHearthstone on Twitter. (2016-03-17). 
  6. PlayHearthstone on Twitter. (2016-03-17).