Post-board games tend to be more attritional and go longer, so you dont want to be stuck with too much fast mana when you dont plan to deploy your combo that quickly anyway
Do you have any idea how boring that is? Illustrated by Immanuela Crovius Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Legal Comp
If that werent enough, Seasoned Dungeoneer allows one of your attacking Clerics, Warriors, Rogues, or Wizards to gain protection from opposing Creatures until the end of the turn and Explore
For example, if you control Tangle Wire and an opponent taps an untapped creature they control as part of the resolution of Tangle Wire's triggered ability, Solitary Sanctuary's ability won't trigger
Waterbend is a generic cost ability that can be paid for with mana, tapping your creatures, or tapping your artifacts