I would also try and use some type of card, like plus power, that will allow you to do 10 more damage to the defending Pokemon that move, while you have that card out there you can use Giga Drain and therefore be able to take off more damage from Torterra
Niv-Mizzet, Guildpact While arguably not even in the top 3 or 4 Niv-Mizzets, Niv-Mizzet, Guildpact has one of the strongest saboteur abilities available
[L][C][C] Elec-ball: 60 damage
(And, of course, the sweet spot is when you have very strong tribal rewards and very strong individual creatures!) Sometimes you might have to play a couple creatures that are just below the bar of normal playability, but you certainly don't want to fill your deck up with those
Once you do so, players can't take actions until the spell has finished resolving