Ancient Elemental Staff

While holding this rod, you gain a +2 bonus to spell attack rolls.

Absorption of the Element of Wind: +1 DEX, as a bonus action, gain flying speed of 30ft for 1 hour each day.
Absorption of the Element of Water: +1 CON, Once per day you can cast Cure Wounds at a 4th level (4d8 + spellcasting modifier)
Absorption of the Element of Fire: +1 CHA, Once per day you can cast Hellish Rebuke
Absorption of the Element of Earth: +1 STR, Once per day you can cast Shield

Notes: Bonus: Spell Attacks, Bonus: Dexterity Score, Bonus: Constitution Score, Bonus: Charisma Score, Bonus: Strength Score