what does : "Use the Steroids effect to the sum total value of 10" mean?  i have been  stuck on the 17th task of the event gamemode

and i cant figure out how the Steroids effect works please explain to me how i can finish this task  thank you.

have a card that has steroids on the field than fuse other cards the card that has steroids will get attack equal to steroids # so if you have Att 4 HP 12 steroid 2 and you fuse 2 other cards it will be Att 6 HP 12 steroids 2. So the quests is to keep using steroids till you have gotten + 10 attack from steroids

fyi Lady Vamp and  Journalist are good cards to do the steroid quests 

Also note that if the opponent card facing your card with steroid has whip, it will absorb part of (or entire) steroid bonus and temp. add it to that card's opponent.

For example:

EnemyCard1
whip 5

YourCard1  YourCard2 YourCard3
steroid 10                                 steroid 3

So suppose that YourCard2 combines with another card. All cards you own that have steroid ability will be triggered and permanently increase the attack point of your cards. So YourCard3's attack will permanently increase by 3.

However. YourCard1 will only increase its attacking power by 5 even though it should increase by 10 because the enemy card  facing YourCard1 (EnemyCard1) has whip ability, meaning any attack rise (steroid, viagra, etc) will be temp stolen. So YourCard1 will increase its attack by 5 and the other 5 is stolen by EnemyCard1 to boost its attack up by 5 points for its one upcoming turn. Once that turn has completed, the attack boost of 5 stolen by EnemyCard1 will expire. The 5 stolen attack points will not return to YourCard1.