During your turn you can play cards from your hand in any order. When you play a card the primary effect, found on the bottom left of the card, is applied.
In addition, some cards have secondary effects, indicated with text on each card, which happens after the primary effect is completed.
All cards played from your hand must remain on the table and will be placed into your own discard pile only at the end of your turn (except Defence and Monster cards, which stay in play untill defeated).
You aren’t required to play all cards in your hand, however, you must discard any cards still in your hand at the end of the turn. Discarded cards are placed face up into your own discard pile.
When you have played all the cards you want to, place in your discard pile all cards played during this turn (but not Monsters and Defence cards in play) and any remaining cards in your hand. You then end your turn by drawing 5 new cards from your deck.
If your deck runs out, shuffle the discard pile to create a new deck, then continue drawing until you have 5 cards.