How can you create a combo with Zameck Guildmage, Glen Elendra Archmage, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Zameck Guildmage, Glen Elendra Archmage, Phyrexian Altar

Color identity: GU
Mana cost: {G}{U}
Steps:
  1. Activate Zameck Guildmage's first ability by paying {G}{U}, causing each creature you control to enter the battlefield with an additional +1/+1 counter this turn.
  2. Activate Phyrexian Altar by sacrificing Glen Elendra Archmage, adding one mana of any color.
  3. When Glen Elendra Archmage dies, it triggers its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter and a +1/+1 counter on it.
  4. The two counters are removed from Glen Elendra  as a state-based action.
  5. Repeat from step 2 any number of times.
  6. Once you have infinite mana, you amy activate Zameck Guildmage's abilities any number of times.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on Glen Elendra Archmage and on creatures that enter the battlefield under your control this turn
  - Infinite card draw
  - Infinite colored mana
  - Infinite death triggers
  - Infinite draw triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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