First printed in Born of the Gods (2014)
Sunbond 
Enchantment — Aura
Enchant creature
Enchanted creature has "Whenever you gain life, put that many +1/+1 counters on this creature."
Combos
361 combos from Commander Spellbook, the most popular first.
- Infinite damage, Infinite lifegain…: Sunbond + Walking Ballista
- Infinite lifegain, Infinite lifegain triggers…: Spike Feeder + Sunbond
- Infinite damage, Infinite lifegain…: Sunbond + Triskelion
- Infinite creature ETB, Infinite lifegain triggers…: Scurry Oak + Soul Warden + Sunbond
- Infinite damage, Infinite lifegain triggers…: Shalai and Hallar + Sunbond
- Infinite creature ETB, Infinite lifegain triggers…: Essence Warden + Scurry Oak + Sunbond
- Infinite creature ETB, Infinite lifegain triggers…: Herd Baloth + Soul Warden + Sunbond
- Infinite creature ETB, Infinite lifegain triggers…: Scurry Oak + Soul's Attendant + Sunbond
- Infinite creature ETB, Infinite lifegain triggers…: Essence Warden + Herd Baloth + Sunbond
- Infinite creature ETB, Infinite lifegain triggers…: Herd Baloth + Soul's Attendant + Sunbond
Legality
Constructed
- Standard Not legal
- Pioneer Legal
- Modern Legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Not legal
- Timeless Not legal
- Alchemy Not legal
- Penny Dreadful Not legal
- Premodern Not legal
- Old School 93/94 Not legal
Singleton
- Gladiator Not legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Not legal
- Tiny Leaders Not legal
- Oathbreaker Legal
- Brawl Not legal
- Standard Brawl Not legal
- Competitive Brawl Not legal