Sage of Hours + Spellbinder + Beacon of Immortality + Light of Promise

Sage of Hours

Spellbinder

Beacon of Immortality

Light of Promise

How it works

1. Deal combat damage to an opponent using the creature that has Spellbinder attached.
2. Spellbinder triggers, casting a copy of Beacon of Immortality without paying its mana cost.
3. Resolve the copy of Beacon of Immortality, doubling your life total.
4. Sage of Hours triggers, putting a number of +1/+1 counters on it equal to the life you gained.
5. Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
6. Repeat each turn.