The last new card is The Grim Captains LockerThe Grim Captains Locker, which can tap to Surveil 1, and does a pretty fine impression of a creatures-only Underworld BreachUnderworld Breach
A bold claim, I know, but lets take a moment to compare Deep Gnome Terramancer to most of whites other mana ramp spells: You dont need to be behind your opponents in land count to trigger this ability There arent any extra mana costs you have to pay for this mana ramp effect (and unlike treasure generators, this ramp is also more permanent) Deep Gnome Terramancer only costs 2 mana, putting it on par with the rate found on many of greens best ramp spells Like Natures Lore and Three Visits, you can fetch nonbasic Plains cards like Jetmirs Garden The condition for this cards effect happens all the time in Commander, and can be found on cards in most decks of any power level your opponents are playing even precons
Soul Warden and friends
The problem with Smoldering EggSmoldering Egg is two-fold: One, seven counters is a lot of counters to pay off into a simple GuttersnipeGuttersnipe
Overall though, the individual power level of a lot of these cards is very high, making it a solid Goodstuff deck that has extra synergies to help elevate it to be a solid contendor at a table
The fact that you have to wait until your upkeep to get the effect is pretty tough given designs these days, but if you can keep it on the battlefield a few turns, it could yield some dividends
