Startling Stare of the Snake-Eyes (MP24-EN243) - 25th Anniversary Tin: Dueling Mirrors 1st Edition

If the total Levels of "Snake-Eye" monsters you control are 2 or higher: Activate 1 of these effects;
• Target 1 face-up monster your opponent controls or in their GY; place it face-up in its owner's Spell & Trap Zone as a Continuous Spell.
• Target 1 Monster Card treated as a Continuous Spell on the field; Special Summon it to your field.
You can only activate 1 "Startling Stare of the Snake-Eyes" per turn.