How can you create a combo with Quickbeam, Upstart Ent, Devoted Druid, Spawnsire of Ulamog, Maskwood Nexus?
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[START OF COMBO]This combo can be formed with Quickbeam, Upstart Ent, Devoted Druid, Spawnsire of Ulamog, Maskwood Nexus

Color identity: G
Mana cost: {4}
Steps:
  1. Activate Spawnsire of Ulamog's first ability by paying {4}, creating two 0/1 Eldrazi Spawn creature tokens.
  2. When the Eldrazi Spawns enter the battlefield as Treefolk due to Maskwood Nexus, Quickbeam triggers twice, giving Devoted Druid and up to one other creature +4/+4 until end of turn.
  3. Activate Devoted Druid's first ability by tapping it, adding {G}.
  4. Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
  5. Repeat from step 3 three additional times.
  6. Repeat from step 1.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite green mana
  - Infinite leaves the battlefield
  - Infinitely large creatures until end of turn
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Devoted Druid does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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