How can you create a combo with Zask, Skittering Swarmlord, Mana Echoes, Needlebug, Goblin Bombardment?
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[START OF COMBO]This combo can be formed with Zask, Skittering Swarmlord, Mana Echoes, Needlebug, Goblin Bombardment

Color identity: BRG
Mana cost: {4}
Steps:
  1. Cast Needlebug from your graveyard by paying {4}.
  2. Needlebug enters the battlefield, triggering Mana Echoes, adding at least {C}{C}{C}{C}.
  3. Activate Goblin Bombardment by sacrificing Needlebug.
  4. Needlebug dies, triggering Zask.
  5. Holding priority, repeat from step 1 any number of times.
  6. Resolve a Zask trigger, milling two cards.
  7. Resolve a Goblin Bombardment ability, dealing 1 damage to any target.
  8. Repeat the last two steps any number of times.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite damage
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite self-mill
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Zask, Skittering Swarmlord must be on the battlefield
  - Mana Echoes must be on the battlefield
  - Needlebug must be in your hand or in the graveyard
  - Goblin Bombardment must be on the battlefield
  - You control at least two additional Insect creatures.
[END OF COMBO PREREQUISITES]
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