How can you create a combo with Helga, Skittish Seer, Mind Over Matter, Cloudstone Curio?
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[START OF COMBO]This combo can be formed with Helga, Skittish Seer, Mind Over Matter, Cloudstone Curio

Color identity: GWU
Mana cost: 
Steps:
  1. Activate Helga by tapping it, adding an amount of any one color of mana equal to its power that can only be spent to cast creature spells with mana value 4 or greater or creature spells with {X} in their mana cost.
  2. Cast the creature with mana value 4 or greater or {X} in its mana cost by paying its mana cost, ensuring to spend at least four total mana if needed.
  3. Helga triggers, causing you to draw a card, gain 1 life and put a +1/+1 counter on Helga.
  4. When the creature enters the battlefield, Cloudstone Curio triggers, returning the other creature with mana value 4 or greater or {X} in its mana cost from the battlefield to your hand.
  5. Activate Mind Over Matter by discarding a card, untapping Helga.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Near-infinite mana permanents you control can produce
  - Infinite self-discard triggers
  - Near-infinite lifegain
  - Near-infinite lifegain triggers
  - Near-infinite enters the battlefield
  - Infinite draw triggers
  - Infinite looting
  - Near-infinite storm count
  - Near-infinite leaves the battlefield
  - Near-infinite untap of permanents you control
  - Near-infinite +1/+1 counters on Helga
  - Near-infinite colored mana that can only be spent to cast creature spells with mana value 4 or greater or creature spells with X in their mana cost[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You have a nonartifact creature card in hand with mana value 4 or greater or with {X} in its mana cost that can be cast using only one color of mana.
  - You control a nonartifact creature card with mana value 4 or greater or with {X} in its mana cost that can be cast using only one color of mana.
  - Helga does not have summoning sickness.
  - Helga has a power that is equal to or greater than 4 or the highest mana value among the generic creatures, whichever is greater.
[END OF COMBO PREREQUISITES]
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