What do Might of Valyria and Wisdom of Valyria do?

They're two of the four "all breeds" research nodes in Dragon Care — they boost a stat on ALL your dragons, whatever their breed:

• Might of Valyria → Strength (physical damage/defense, the Warrior breed's stat).
• Wisdom of Valyria → Intelligence (special abilities / Fire damage, the Hunter breed's stat).

Values:

• Level I: +2%/level, max +10% (level 5).
• Level II (tier 7): +3%/level, out of 10.

➡️ Because the effect applies to your whole dragon army, these nodes pay off even early. Prioritize the stat matching your dominant breed: Strength if you mostly play Warriors, Intelligence if you play Hunters.