Activate 1 of these effects, but you cannot Special Summon from the Extra Deck for the rest of this turn, except Xyz Monsters;
• Discard 1 card, and if you do, Special Summon 1 "tellarknight" or "Constellar" monster from your Deck with a different Type from the monsters you control.
• Target face-up monsters your opponent controls, up to the number of "tellarknight" and "Constellar" monsters you control; negate their effects until the end of this turn.
You can only activate 1 "Stellarnova Binding" per turn.