({1} magic symbol) ({G} magic symbol) ({GU} magic symbol) ({GU} magic symbol) ({U} magic symbol) plus enough mana to pay for commander tax, if applicable available.
Steps
Cast
Lonis either from your hand or from the command zone by paying ({1} magic symbol) ({GU} magic symbol) ({GU} magic symbol) plus commander tax, if applicable.
Holding priority, cast
Double Major by paying ({G} magic symbol) ({U} magic symbol) , creating a nonlegendary copy of the
Lonis spell.
Resolve both
Lonis spells.
Activate
Krark-Clan Ironworks by sacrificing a Clue, adding ({C} magic symbol) ({C} magic symbol) .
Lonis and the
Lonis token's second abilities trigger.
Resolve the nontoken
Lonis trigger, putting a +1/+1 counter on the token
Lonis.
The token
Lonis's first ability triggers, creating a Clue artifact token.
Resolve the token
Lonis's trigger from step 2, putting a +1/+1 counter on the nontoken
Lonis.
The nontoken
Lonis's first ability triggers, creating a Clue artifact token.
Repeat from step 4.
Notes
You may optionally target any other creature using one of the triggers to put infinite +1/+1 counters on that creature.
Once you have infinite mana, you may instead sacrifice the Clues to their own abilities.