Thunderpunch30+

Flip a coin. If heads, this attack does 30 damage plus 10 more damage. If tails, Electabuzz does 10 damage to itself.

Shock Wave20

Flip a coin. If heads, the Defending Pokemon is now Paralyzed. If Electabuzz is evolved from Elekid, this attack does 20 damage to 1 of your opponent's Benched Pokemon. (Don't apply Weakness and Resistance for Benched Pokemon.)