Hee Hee..I have a foil version of this card and Goku's hair is shiney..hee hee..um..anyway..

Standard and TE

Goku's Training is an OK card, and it does just as good in TE and in Standard. If it weren't for the nasty 2 words 'If succesfull'and the words 'Remove from the game after use' it would be remarkable, because it also does +2 stages. 0_o It's ability to draw a card is alright, it's a good card to put in a Saiyan deck 0_o..or a Red Phys. Beatdown deck.

There are only a handful of cards that allow you to draw from your discard pile during combat, and each has advantages and disadvantages. 

You can't use this card twice per combat in a Goku deck, like you can Goku's Physical Attack, and the attack must be successful, unlike Cell's Backslap. On the other hand, this is the only one that does any bonus stages of damage, guaranteeing you'll do at least a little damage, even if your opponent has more power levels than you do. Clearly, this card fits best in card advantage decks, especially now that King Kai's New Home exists to put an upper limit on the cards you can draw. Since you have to play this card to draw another, you won't have to worry about KKNH preventing you from drawing. It's also a great card for Goku decks, since they can have four of them.