Beacons of Hope
Initiative determines the order of creatures’ turns in combat. We roll for initiative once per combat for initiative as stated in the PHB. Essentially, each player must make a Dexterity check to determine their place in the initiative order. The DM makes one roll for an entire group of identical creatures, so each member of the group acts at the same time. The DM ranks the combatants in order from the one with the highest Dexterity check total to the one with the lowest. This is the order (called the initiative order) in which they act during each round. Ties mean that those actions all occur at the same time.
Spells must be declared BEFORE the beginning of the round (at the end of the previous round after everyone goes). A spell caster who is struck before casting his spell will have his or her spell ruined. A tie does not ruin a spell. This does not apply to spells cast from objects (for example, from rings, wands, rods or staves).
A feat represents a talent or an area of expertise that gives a character special capabilities. It embodies training, experience, and abilities beyond what a class provides.
At certain levels (but not at 1st level), your class gives you the Ability Score Improvement feature. Using the optional feats rule, you can forgo taking that feature to take a feat of your choice instead. You can take each feat only once, unless the feat’s description says otherwise. You must meet any prerequisite specified in a feat to take that feat. If you ever lose a feat’s prerequisite, you can’t use that feat until you regain the prerequisite. See pages 165 – 170 in the PHB.