Combos Utilizing Mind-Extraction

before blastoderm fades away, sacrifice it to make opponent discard all green cards in his/her hand

Play Mind Extraction, make the Tidal Visionary whatever colour your opponent is playing and sacrifice it. Your opponent discards all cards of the chosen colour. Especially handy against mono-colour.

attack with dark maze. before the end of your turn, sac dark maze to make opponent discard all blue cards in his hand

attack with the mongrel and make it bigger and then sac it to the mind extraction for whatever color you want