1) Hun Elsa will let loose 2) Let fly 3) Let go 4) Let go of 5) Let loose 6) Loose 7) Make free from restraint 8) Release 9) Release from a leash 10) Release or vent 11) Relinquish 12) Set Fido loose 13) Set free 14) Set free from restraint 15) To bring about 16) To let go 17) To precipitate 18) To release Found on https://www.crosswordclues.com/clue/unleash
A player may choose to have a creature with unleash enter the battlefield with a +1/+1 counter on it. If a creature with unleash has a +1/+1 counter on it (whether put there by its own ability or another source), that creature can't block. Unleash appears on red and black cards of the Rakdos guild in Return to Ravnica. Found on http://en.wikipedia.org/wiki/List_of_Magic:_The_Gathering_keywords#Typecycl