After the first turn, all turns follow the pattern below. The order of
the following turn events cannot be changed.
1 - Play cards. A player can play (put down) up to 2 cards
from their hand into their division of the battlefield. This step is optional.
Once a monster is played into the battlefield, it is called an “active”
monster, and belongs to the player who played it. A red token should be placed on a monster’s hearts as soon as it is played.
2 - Use an ability. Each monster has only one ability.
On a player’s turn, they select only one of their active monsters’
abilities and use it against any single active monster of their choice
(unless otherwise stated).
So turns are: Play no more than 2 cards, then use 1 ability, in that order,
then the turn is over.