Exosister Martha (Starlight Rare) (POTE-EN025) - Power of the Elements 1st Edition Condition:Heavily Played The Cybernetic Horizon booster set

The Cybernetic Horizon booster set contains 100 cards:

Card Text1 "HERO" monster + 1 WATER monster

or any face-down Defense Position monsters

Once per turn turn

Exosister Martha (Starlight Rare) (POTE-EN025) - Power of the Elements 1st Edition Condition:Heavily Played The Cybernetic Horizon booster setTypeSpellcaster Effect Monster AttributeLIGHT Level Rank4 ATK DEF1600 800 Card TextIf you control no monsters, or only Xyz Monsters: You can Special Summon this card from your hand, and if you do, Special Summon 1 "Exosister Elis" from your Deck. You cannot Special Summon monsters the turn you activate this effect, except "Exosister" monsters. If a card(s) moves out of either GY (except during the Damage Step): You can Special Summon from your Extra