Weaver of Harmony does not have summoning sickness.
An opponent controls at least three lands.
Mana Needed
({G} magic symbol) ({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 three lands, adding at least ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Activate
Pemmin's Aura's second ability by paying ({U} magic symbol) , untapping
Weaver of Harmony.
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 three lands, adding at least ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Activate
Pemmin's Aura's second ability by paying ({U} magic symbol) , untapping