Orobas, the Living Rainbow, is an Ancient that can open act 2. Orobas offers one relic from each of three groups, so Electric Shrymp (group 1) and Touch of Orobas (group 3) can appear in the same offer.

Touch of Orobas: starter relic upgrades

Touch of Orobas replaces your starter relic with its Ancient version:

CharacterStarter relicBecomes
IroncladBurning Blood: heal 6 HP after combatBlack Blood: heal 12 HP after combat
SilentRing of the Snake: draw 2 extra cards at the start of each combatRing of the Drake: draw 2 extra cards on each of your first 3 turns
DefectCracked Core: Channel 1 Lightning at the start of each combatInfused Core: Channel 3 Lightning, and Lightning deals 1 extra damage
NecrobinderBound Phylactery: Summon 1 each turnPhylactery Unbound: Summon 5 at the start of combat and 2 each turn
RegentDivine Right: gain 3 Stars at the start of each combatDivine Destiny: gain 6 Stars

Electric Shrymp

Electric Shrymp enchants a Skill you choose with Imbued: that card is played automatically at the start of each combat.

Everything Orobas can offer

GroupRelics
1Electric Shrymp, Glass Eye (obtain 2 common, 2 uncommon and 1 rare card), Sand Castle (upgrade 6 random cards), and either Prismatic Gem (1 in 3: +1 energy each turn, card rewards include other characters' cards) or Sea Glass (see 15 cards from another character and add any of them)
2Alchemical Coffer (4 potion slots filled with random potions), Driftwood (reroll each card reward once), Radiant Pearl (add a Luminesce to your hand at the start of each combat)
3Touch of Orobas or Archaic Tooth (transform a starter card into an Ancient version)

See Neow and the Ancients for the other Ancients.