Weaver of Harmony does not have summoning sickness.
An opponent controls at least five lands.
({G} magic symbol) available.
Steps
At the beginning of your precombat main phase, Carpet of Flowers triggers.
Holding priority, activate Weaver of Harmony by paying ({G} magic symbol) and tapping it, copying Carpet of Flowers's ability.
Resolve the copy of Carpet of Flowers's ability, targeting an opponent that controls at least five lands, adding at least ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Activate Weaver of Harmony by paying ({3} magic symbol) and untapping it, giving it +2/+2 until end of turn.
Repeat from step 2.
Results
Infinite colored mana.
Infinitely large Weaver of Harmony until end of turn.