Weather the Storm Cards that just gain life are weaker than cards that impact the board, but Weather the Storm gains enough life to overcome that weakness
With the current context in mind, this card will play an unfilled role
Having a way to keep a big creature on the board for the low cost of holding a single land open is an essential part of most formats, and Tamiyo's Safekeeping is one of the best you could tuck away for when you're in a pinch
Some inclusions are meant to set up Eivor's trigger
Red + Black Burn revels in all-things disruption (Rakdos's Return, Kaervek's Purge, Blightning, Carnival // Carnage, etc.)
However, an ability like Sen Triplets makes it a prime target for your opponent's malice, making me think that you won't get to keep it in play as often as you think