30 damage potentially on turn 1 is nice, but also if you time your singing correctly, you can have the damage take place on a later turn, against a totally different opponent
I cast a turn-one Telepathy, and the new player scooped his cards up and left, saying I dont play against Telepathy, it just reveals everyones game plan and then another player can backseat game once they see someone has a victory cinched up. He proceeded to walk away for five minutes, then returned and backseat-gamed us until he saw a winning hand
Pokemon Trading Card Game for Game Boy Official Nintendo Player's Guide from Nintendo Power [Nintendo Power] on Amazon.com
On the surface, this might seem a little janky, but let me set the scene
Weakness: Lightning (x2) Resistance: Fighting (-30) Retreat: 1 #221 Wooloo Coloress HP60 Basic Pokemon [C] Overturn: 10 damage
Afterwards he tells you that Professor Viper is behind it all