I just wanted to give a quick update to anyone thinking of getting Darkmoon Card: Tsunami but have been hesitant because of how it originally worked. To get everyone up to speed the issue was as follows: DMC:T stacked a 80 spirit buff up to 5 stacks whenever you cast a healing spell on others and originally it only counted spells with a cast time and swiftmend. This meant that Wild Growth, Rejuvenation, and Lifebloom did not trigger the stack or maintain it. In certain boss encounters there were certainly spans of 20 seconds where you could go without using a cast time heal or swiftmend. I’m not saying that it happens often and I still had an 80% to 85% uptime on the buff though I cannot say how much of that time was at a full 5 stacks.
Through one of their stealthy hotfixes the card now works similar to Solace of the Defeated from Trial of the Crusader. It now procs on all spells and even goes further than that and procs every time a spell heals. What this means is that one lifebloom or one wild growth will near instantly get you up to five stacks of the buff. This also means you are almost certainly guaranteed to have a full 100% uptime at +400 spirit from the trinket. This change might just put Tsunami almost at the top as far as overall static bonus goes. Core of Ripeness still provides more if used during mana tide every three minutes, yielding an effective 975 spirit (only 325 if used every 2 minutes without mana tide).
Fall of Mortality is one of the other top end trinkets that will be contending for the number two spot on your character sheet. Its bonus is 1926 spirit every 75 seconds for 15 seconds (if I am wrong on its calculated ICD please let me know). This gives us a 20% uptime or an approximate static bonus of 385 spirit. The issue of Fall of Mortality is that its uptime is 15 seconds and downtime is 60 seconds leaving a large window for Mana Tide to fall under. If you do manage to line them up perfectly by luck then it proves out to be a huge bonus but it is not something you can plan for.
With Tsunami now with 100% uptime at five stacks you can guarantee it will be active for Mana Tide every time. What this means is that its effective spirit jumps from 400 to 517 if you have access to one mana tide in your group, and it jumps up again to 634 if you have two shamans in your group alternating Tides.