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Rules guide · Instant

Insidious WillHow it works & interactions with other cards

By the ManaCount desk· 5 min read· Kaladesh· September 30, 2016
Carte Magic Insidious Will

Insidious Will is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

01

Official card text

Choose one — • Counter target spell. • You may choose new targets for target spell. • Copy target instant or sorcery spell. You may choose new targets for the copy.

How it works : Insidious Will

Original English text — Wizards of the Coast / Scryfall

No additional ruling has been published for this card.

02

Popular combos

Real combos played by the community, sorted by popularity.

Narset's Reversal
+Insidious Will
#1

Narset's Reversal + Insidious Will

Infinite magecraft triggers
  1. 1Cast any instant or sorcery by paying its mana cost.
  2. 2Holding priority, cast Insidious Will by paying its mana cost, targeting the instant or sorcery cast in step 1.
  3. 3Cast Narset's Reversal by paying {U}{U}, copying Insidious Will targeting the spell cast in step 1 and returning the original Insidious Will to your hand.
  4. 4Cast Insidious Will by paying its mana cost, copying the copy of Insidious Will, targeting the copy of Insidious Will.
  5. 5Resolve the copy of Insidious Will, creating a copy of Insidious Will targeting the copy of Insidious Will.
  6. 6Repeat step 5.
Kalamax, the Stormsire
+Insidious Will
#2

Kalamax, the Stormsire + Insidious Will

Infinite +1/+1 counters on a creatureInfinite magecraft triggers
  1. 1Cast any sorcery by paying its mana cost.
  2. 2Holding priority, cast Insidious Will by paying its mana cost.
  3. 3Kalamax's first and second abilities trigger.
  4. 4Resolve the first ability, creating a copy of Insidious Will and choosing to copy the original Insidious Will.
  5. 5Resolve the second ability, putting a +1/+1 counter on Kalamax.
  6. 6Resolve the Insidious Will copy, creating a copy of Insidious Will.
  7. 7Kalamax's second ability triggers, putting a +1/+1 counter on itself.
  8. 8Repeat from step 6 any number of times.
Alania, Divergent Storm
+Insidious Will
#3

Alania, Divergent Storm + Insidious Will

Infinite magecraft triggers
  1. 1Cast the additional sorcery by paying its mana cost.
  2. 2Alania triggers; choose not to have an opponent draw a card.
  3. 3Holding priority, cast Insidious Will by paying {2}{U}{U}, targeting the additional sorcery.
  4. 4Alania triggers, causing an opponent to draw a card and you to copy Insidious Will, with the copy targeting the original Insidious Will.
  5. 5Resolve the copy of Insidious Will, copying the original Insidious Will, with the copy targeting the original Insidious Will.
  6. 6Repeat step 5.
Adaptive Training Post
+Insidious Will
#4

Adaptive Training Post + Insidious Will

Infinite magecraft triggers
  1. 1Cast the additional instant or sorcery by paying its mana cost.
  2. 2If Adaptive Training Post had two charge counters on it, it triggers, putting a charge counter on it.
  3. 3Holding priority, activate Adaptive Training Post by removing three charge counters from it, copying the next instant or sorcery spell you cast this turn.
  4. 4Cast Insidious Will by paying its mana cost, targeting the spell cast in step 1.
  5. 5Adaptive Training Post triggers, copying Insidious Will, with the copy targeting the original Insidious Will.
  6. 6Resolve the copy of Insidious Will, copying the original Insidious Will, with the copy targeting the original Insidious Will.
  7. 7Repeat step 5.
Dual Strike
+Insidious Will
#5

Dual Strike + Insidious Will

Infinite magecraft triggers
  1. 1Cast any other instant and/or sorcery spell, or wait for an opponent to cast one.
  2. 2Holding priority, cast Dual Strike by paying {R}{R}, copying the next instant or sorcery spell you cast with mana value four or less.
  3. 3Cast Insidious Will by paying {2}{U}{U}, targeting the instant or sorcery spell cast in step 1.
  4. 4Dual Strike triggers, copying Insidious Will, with the copy targeting the original Insidious Will.
  5. 5Resolve the copy of Insidious Will, copying Insidious Will, with the copy targeting the original Insidious Will.
  6. 6Repeat step 5.
Prismari, the Inspiration
+Insidious Will
#6

Prismari, the Inspiration + Insidious Will

Infinite magecraft triggers
  1. 1Cast any other instant or sorcery by paying its mana cost.
  2. 2Holding priority, cast Insidious Will by paying its mana cost, targeting the instant or sorcery cast in step 1.
  3. 3Insidious Will's storm ability triggers, creating at least one copy of Insidious Will targeting the original Insidious Will.
  4. 4Resolve a copy of Insidious Will, copying Insidious Will targeting the original Insidious Will.
  5. 5Repeat step 4.
Gravitic Punch
+Kalamax, the Stormsire
+Insidious Will
#7

Gravitic Punch + Kalamax, the Stormsire + Insidious Will

Infinite magecraft triggersInfinite +1/+1 counters on a creatureInfinite damage
  1. 1Cast Gravitic Punch by paying its mana cost, targeting Kalamax.
  2. 2Holding priority, cast Insidious Will by paying its mana cost, targeting Gravitic Punch.
  3. 3Kalamax's first and second abilities trigger.
  4. 4Resolve the first ability, creating a copy of Insidious Will targeting the original Insidious Will.
  5. 5Resolve the second ability, putting a +1/+1 counter on Kalamax.
  6. 6Resolve the Insidious Will copy, creating a copy of Insidious Will, targeting the original Insidious Will.
  7. 7Kalamax's second ability triggers, putting a +1/+1 counter on itself.
  8. 8Repeat from step 6 any number of times.
Errant, Street Artist
+Reality Spasm
+Insidious Will
#8

Errant, Street Artist + Reality Spasm + Insidious Will

Infinite untap of permanents you controlInfinite magecraft triggersInfinite mana permanents you control can produce
  1. 1Cast Reality Spasm by paying at least {3}{U}{U}, targeting at least three permanents and choosing the untap mode.
  2. 2Holding priority, cast Insidious Will by paying its mana cost, copying Reality Spasm, targeting at least three permanents.
  3. 3Holding priority, activate at least two mana-producing permanents you control by tapping them, adding at least {1}{U}.
  4. 4Activate Errant by paying {1}{U} and tapping it, copying the Reality Spasm copy, targeting Errant and at least two mana-producing permanents you control.
  5. 5Resolve the copy of Reality Spasm from step 3, untapping Errant and at least two mana-producing permanents you control.
  6. 6Repeat from step 3.
03

Legal formats

pioneermodernlegacyvintagepennycommanderoathbreakerduel
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