From Archon Arcana - The KeyForge Wiki
A turn consists of one player performing the five steps detailed in the game’s turn sequence, which are:
- Forge a key
If the active player has enough Æmber to forge a key during this step,they must do so.
- Choose a House
During this step, the active player chooses one of the three houses on their identity card to activate, making it the active house for the remainder of the turn.
- Play, discard, and Use cards of the chosen house
The active player may play or discard any number of cards of the active house from their hand and may use any number of cards of the active house that are in play under their control. Eligible cards may be played,used, or discarded in any order. A card’s house is determined by an icon in the upper-left corner. If the active house corresponds to a card’s icon, that card is eligible to be played, used, or discarded
First Turn Rule: During the first player’s first turn of the game, that player may only play or discard one card from their hand.
The active player may not play, use, or discard cards that aren’t of the active house unless specified by a card ability.
- Ready cards
The active player readies each of their exhausted cards.
- Draw cards
The active player draws cards from the top of their deck until they have six cards in their hand. After a player completes this step, their turn ends.
—Official rules v1.7 December 2020