The first limited availability hero, my 2017-Sep, main account got, was purple Boomer 4* 1.1
But by then I already had Rigard, Sabrina and Tiburtus
I have 21x leveled purples ( including Layla 2*+7, and Fletcher 1*+19 )
Boomer is STILL sitting at 4* 1.1 along with my benched 4* 3.60 Peters ( Hansel is better, silence 1x target is weak because the target can still get mana, and others enemies unaffected, this is similar to invisibility potion is weak compared to cheaper, and better, titanium shield )
Pirates are very weak after Devs over did it with insanely over powered Guardians ( see notes )