Ayara's Oathsworn + Beacon of Tomorrows + Hex Parasite

Mana needed: {7}{U}{U}{B/P} each turn

UB identity

Commander legal

The 3 combo pieces

• Ayara's Oathsworn
• Beacon of Tomorrows
• Hex Parasite

What must be in place

Ayara's Oathsworn does not have summoning sickness and has exactly three +1/+1 counters on it.
An opponent cannot block Ayara's Oathsworn.

How to execute it

1. Deal combat damage to an opponent using Ayara's Oathsworn.
2. Ayara's Oathsworn triggers, putting a +1/+1 counter on it and searching your library for Beacon of Tomorrows and putting it into your hand.
3. Activate Hex Parasite by paying {1}{B/P}, removing a +1/+1 counter from Ayara's Oathsworn and giving Hex Parasite +1/+0 until end of turn.
4. Cast Beacon of Tomorrows by paying {6}{U}{U}, causing you to take an extra turn after this one, and shuffle Beacon of Tomorrows into your library.
5. Repeat each turn.

What the combo produces

• Infinite turns
• Lock