Crystal of Frostbound Harmony
You can cast Entangle once per day and Spike Growth once per day. No spell components are required; the crystal serves as the focus.
Complete rules
Frostbound Spells You can cast Entangle once per day and Spike Growth once per day. No spell components are required; the crystal serves as the focus. Living Resonance Plants and animals within 30 feet subtly flourish. You have advantage on Wisdom (Animal Handling) and Intelligence (Nature) checks. Heron Guide Once per day, you can summon a spectral heron for an instant of guidance. You gain advantage on one Wisdom (Perception) or Intelligence (Investigation) check of your choice. Moonfrost Tell Whenever you cast Entangle or Spike Growth, or use Heron Guide, the crystal emits a bell-like hum and vents visible frost-vine breath for 1 minute. During that time, you have disadvantage on Dexterity (Stealth) checks to avoid being noticed. Cold-Stiff Aftershock Immediately after you use any boon on the crystal, your speed is reduced by 5 feet until the end of your next turn. Minor Fail-State If you roll a natural 1 on a Nature or Animal Handling check while carrying the crystal, it flares with rime. You take 1d4 cold damage and shed dim light in a 5-foot radius for 1 minute.