Avenger of Zendikar | Mystic Reflection | Purphoros, God of the Forge

Cards

Avenger of Zendikar in hand.
Purphoros on the battlefield.
Mystic Reflection in hand or in exile.
({5} magic symbol) ({G} magic symbol) ({G} magic symbol) ({U} magic symbol) , plus an additional ({1} magic symbol) if
Mystic Reflection was not foretold available.

Cast
Avenger of Zendikar by paying ({5} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Avenger of Zendikar enters the battlefield, triggering its ability and
Purphoros.
Holding priority, cast
Mystic Reflection by paying ({1} magic symbol) ({U} magic symbol) , causing the next creatures or planeswalkers to enter the battlefield this turn to enter as copies of
Avenger of Zendikar.
Resolve the
Avenger of Zendikar trigger, creating a token copy of
Avenger of Zendikar for each land you control.
Each
Avenger of Zendikar enters the battlefield, triggering their abilities and
Purphoros that many times.
Resolve an
Avenger of Zendikar trigger, creating a 0/1 Plant creature token for each land you control.
The Plants enter the battlefield, triggering
Purphoros that many times, dealing 2 damage to each opponent for each Plant that entered the battlefield this way.
Repeat from step 6 for each remaining trigger.
Resolve all remaining
Purphoros triggers, dealing 2 damage to each opponent for each trigger.