If you do, add for each 1 life your opponents have lost this turn
Destroying a land whenever its tapped on someone elses turn is an incredibly powerful effect, and with this in play, games grind to a halt as people mostly stick to playing cards on their turns
It is a card that captures Mewtwo's emotional core, that sense of being immensely powerful yet profoundly alone, in a way that few other card illustrations have managed to achieve across the entire history of the TCG
You are going to need multiple Sagas on the battlefield, and likely some way to manipulate the lore counters in response to an effect that targets or destroys Tom
add in the added bonus of having to discard 5 cards from your deck after you use it and it's no surprise it didn't see a great deal of play
Some new mechanics are introduced with that set notably the LEGEND pieces and the new baby Pokmon but not a lot comes out of this set strategically