This is a less political option than the previous two entries, but feels a bit less risky than paying to load up someone elses hand
The heroes have lost, and the only one who remains is Celes, who spends the rest of the game on a quest through a destroyed world to bring her allies back together
If you activate a station ability while you control Tapestry Warden, but you no longer control Tapestry Warden at the time that ability resolves, use the power of the creature tapped to pay the cost of the station ability to determine how many counters are put on the permanent with station
Ultimately, whether Valgavoth should see play depends on the current metaif graveyard strategies are prevalent, it could be a solid choice, but if not, there may be better alternatives available
Mystic Forge and things like Helm of Awakening already give you access to almost infinite storm count and card draw, which paired with your commander gives you some faster and additional card draw
Outside of Goblin Chainwhirler synergies (or other similar "combos"), I don't think Plaguecrafter's Familiar is good enough, but it could be extremely strong in the right shell