Cast Ancestral Statue by paying ({4} magic symbol) .
Alela triggers, creating a 1/1 Faerie creature token.
When the Faerie enters the battlefield, Cathars' Crusade triggers twice, putting two +1/+1 counters on each creature you control.
When Ancestral Statue enters the battlefield, it and Cathars' Crusade trigger twice.
Resolve the Ancestral Statue triggers, returning it and the Faerie from the battlefield to your hand.
Resolve the Cathars' Crusade triggers, putting two +1/+1 counters on each creature you control.
Activate Workhorse four times by removing four +1/+1 counters from it, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) .