Poseidon's Boons add Knockback to abilities and improves room rewards. Usually, Boons from Poseidon provide high damage so it's suitable for weapons that deal single powerful damage like Shield of Chaos, Special of External Spear, Special of Twin Fists, Special of Stygian Blade, Special of or Adamant Rail. It is also very good on pursuable attacks like Special of Heart-Breaking Bow and Attack from Adamant Rail. 

Your Attack deals more damage and knocks foes away.
Attack Damage: +30%

Special deals more damage and knocks foes away.
Your Special Damage: + 70%

Damages foes in an area and knocks them away.
Your Cast Damage: 50 -> 60
 

damages foes around you and knocks them away.
Your Cast Blast Damage: 50 -> 60

Offering Requirements

Your Dash damages foes in an area and knocks them away.
Dash Damage: 35

Makes you surge into foes while Impervious forl.2 Sec.
Call Your Impact Damage: 250
Max Gauge Bonus: 7.2 Sec.

Your Cod Gauge charges up faster when you take damage.
Faster Gauge Cain When Hit: + 40%

Your Attack and Special are stronger the first 10 Sec. I n Encounter(s)
Initial Damage Bonus: +50%

Gain a random assortment of Gemstone, Darkness, Gold, and Health.

Any Gemstone, Darkness and Gold chamber rewards are worth more.
Reward Value: +50%

You deal more damage when slamming foes into barriers.
Slam Damage: +200%

Offer Requirements

Your Boons with knock-away effects deal bonus damage to Bosses.
Knock-Away Damage vs. Bosses: + 20%

Offer Requirements

Your Call pulls in foes and the effect lasts longer.
Bonus Duration: 1 Sec. Duration

Offer Requirements

Slamming foes into barriers creates a watery blast in the area.
Blast Damage: 100

Offer Requirements

Your Boons with knock-away effects also Rupture foes.
Rupture Damage: 10 (every 0.2 Sec.)

Offer Requirements

Your Boons with knock-away effects shove foes multiple times.
Bonus Knock-Away Effects: +1

Offer Requirements

You have a greater chance to find a Fishing Point in each Chamber.
Fish Spawn Chance: +20%

Offer Requirements

Your Cast fires a second projectile, which deals reduced base damage.
Secondary Shot Damage: 30%

Offer Requirements

Your Cast moves slowly, piercing foes and firing shards around it.
Shard Damage: 20

Offer Requirements

When you knock foes away, they are struck by lightning.
Lightning Damage: 40

Offer Requirements

Any Poms of Power you find are more potent.
Bonus Lv. from Poms: +1

Offer Requirements

Your Flood Shot becomes a pulse that damages foes around you.
Pulses per Cast: 3

Offer Requirements

You cannot be stunned, and resist some damage from Bosses.
Boss Damage Reduction: +10%

Offer Requirements