Buy them.

And the other card taken from CORE, along with Wavering Eyes:

Return of the Red-Eyes

Continuous Trap

If you control a “Red-Eyes” monster, except “Red-Eyes B. Chick”: You can target 1 Normal Monster in your Graveyard; Special Summon it. If this card in your possession is destroyed by an opponent’s card effect and sent to your Graveyard: You can target 1 “Red-Eyes” monster in your Graveyard, except “Red-Eyes B. Chick”; Special Summon it. You can only use each effect of “Return of the Red-Eyes” once per turn.

Yes, rather than a simple rename for Chick in LCYW, let us all enjoy extremely cluttered Red-Eyes support card text.