Just cast the Tutor and use the LED in response - you get three mana to cast your spell and you then get to use the Tutor
Alexander Gregory P/T 2 / 2 Set NE - Nemesis Number 136 Language English printings (1) view NE #136 Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless
(Don't apply Weakness and Resistance for Benched Pokemon.) Once during your turn (before your attack), if this Pokemon has any basic Fire Energy attached to it, you may heal 50 damage from it
In PSA 10 condition, the Shadowless Mewtwo commands prices that reflect both its historical significance as an early-production card and its genuine scarcity in top grades
This indicates that this is a common card