Regeneration [Beta Edition] Crab Beast but I say the best

but I say the best way is all smashed together between two slug chips

While it's true that a quillspike does heal the sick

Set: Chronicles Type: Legendary Creature — Elder Dragon Rarity: Rare Cost: {2}{U}{U}{B}{B}{R}{R} Flying

Set: Amonkhet Prerelease Promos Type: Instant // Sorcery Rarity: Rare Cost: {1}{W} // {3}{G} Untap target creature

Fire of Kaladesh deals 1 damage to target player or planeswalker

Regeneration [Beta Edition] Crab Beast but I say the bestSet: Beta Edition Type: Enchantment Aura Rarity: Common Cost: {1}{G} Enchant creature (Target a creature as you cast this. This card enters the battlefield attached to that creature.) {G}: Regenerate enchanted creature. (The next time that creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)