Read rules for Deranged Hermit
Echo 
(At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, create four 1/1 green Squirrel creature tokens.
Squirrel creatures get +1/+1.
(At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, create four 1/1 green Squirrel creature tokens.
Squirrel creatures get +1/+1.1/1
(You may cast this card from your graveyard for its flashback cost. Then exile it.)
: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.