One Ring to Bind Them

At the beginning of each end step if you've gained X or more life this turn gain an experience counter where X is equal to the number of experience counters you have plus 1.
Equip {3}
Equipped creature gains abilities cumulatively based on the number of experience counters -
- 1 - Vigilance
- 3 - Lifelink
- 5 - +1/+1 for each experience counter you have
- 7 - Indestructible
- 9 - Hexproof
One Ring to Bind Them is Indestructible as long as you control Isaac and Patrisha.