Now, this is going to start out with the disclaimer that every party and player is different, and will most likely have their own ideas of what the ‘best spells’ are for the ring. Don’t take the options presented below as the only suggestion. First, spells that require concentration are really good, because in most cases you are using only one of those spells at the time. Having another person casting a concentration spell allows you to concentrate on different spells or use other abilities entirely. Placing a counterspell in there can allow your frontline to deal with enemy spellcasters effectively. Emergency spells and heal spells are also always good whenever the dice are rolling poorly and you need to get everyone back on their feet. Finally, defensive spells like shield and haste are very good too. Remember, the purpose of the ring of spell storing is not to turn your ranger into a second spellcaster, but rather to give the rest of the party access to spells that can turn the tide of battle quicker.