(scd)the rainbow window, crystal hoard

crystal hoard/continuous trap

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. If this card is face-up in your Spell & Trap Zone: You can send it to the Graveyard, then target 1 "Crystal Beast" card you control and 1 other card on the field; return them to the hand. This card's effects cannot be activated in the same chain.

finally, crystal beast DIRECTLY support card^^

1)the first eff for this card can easily trigger crystal beast pegasus and carbuncle effect, you can either summon pegasus to speed up this deck process, or summon carbuncle to summon all monster from your s/t zone.

2)the second effect is very special, i checked wiki, if i not wrong, second effect is a quick-like effect, so........

If this card is face-up in your Spell & Trap Zone: You can send it to the Graveyard, then target 1 "Crystal Beast" card you control and 1 other card on the field; return them to the hand.

even the effect never state during either player turn, but according to trap card spell speed rule, this effect should be a quick effect...

this effect only state need crystal beast card, but not crystal beast monster, you can recycle a pegasus in your spell/trap zone and return a opponent card to hand.

since this effect is a quick effect, it can be useful to disturb opponent play included deck like ba and shaddoll.

(i not 100% sure this effect is a quick effect, just according to wiki)