Energize says: "Cast on yourself at any time. Your Strength value is doubled until the end of the turn."
Brainwave says: "Cast on yourself at any time. Your Craft value is doubled until the end of the turn."
There are 2 of each spell in the spell deck, and as it happened, I was playing the Warlock and managed to get both Energizes. I came across a losing battle for me, and so I cast both in succession. (Warlock starts as a Str: 2 Crft:5) The way I saw it, the first Energize doubled my strength to 4. The second one doubled it again to a Str. value of 8, allowing me to easily win the battle. I want to make sure I played this right. If I did, my group very quickly realized the potential to have both Brainwaves + Psionic Blast (Add your craft value to your strength in battle)!