Atreus, First of Dragons

+3: Add three mana of any color. use this mana to cast dragon spells and/or activate dragon ability's.
-2: Choose up to one dragon you control, when the chosen dragon deals combat damge to player or planeswalker put that many loyalty counters on Atreus
-16: Gain an Emblem with 'Whenever you cast a dragon creature spell, you may search for a dragon creature card and put into play." Atreus can be Com