Crystalline Crawler has at least one +1/+1 counter on it.
Sporoloth Ancient has at least one spore counter on it.
({2} magic symbol) available.
Steps
Activate Blade of Shared Souls' equip ability by paying ({2} magic symbol) , attaching it to another creature you control.
Blade of Shared Souls triggers, causing the creature it is attached to to become a copy of Roalesk.
Put the creature with Blade of Shared Souls attached into your graveyard due to the legend rule.
The creature triggers, putting two spore counters on Sporoloth Ancient and two +1/+1 counters on Crystalline Crawler.
Activate Sporoloth Ancient by removing two spore counters from it, creating a 1/1 Saproling creature token.Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding ({2} magic symbol) .