Once per turn, if a face-up "Crystal Beast" monster(s) you control is destroyed by battle or card effect: You can Special Summon 1 "Crystal Beast" monster from your Deck. You can send this face-up card from the field to the Graveyard, then target 1 "Crystal Beast" card you control and 1 other card on the field; return them to the hand. You cannot activate these effects in the same chain.
How to Get
Sends itself from field to Graveyard for cost / Returns from field to hand
Because Rebound can only be chained to the activation of Trap Cards and not the activation of their effects. (And Horde doesn't return anything to the hand when it first resolves.) Pretty much every Counter Trap works this way, there's only 1 Counter Trap that can be chained to S/T effects (and it won't exist in Duel Links for a long, long time.)