Fanatic of Rhonas work wonders in our Wurm Tribal build, providing a ton of mana. An extreme upgrade from Whisperer of the Wilds, easily producing , while with Eternalize it can recur itself and return as a 4/4 black Zombie Snake Druid token.
Disciple of Freyalise // Garden of Freyalise adds to our arsenal another card draw spell (one with great synergy with our Wurm Tribal build since our Wurms have very high power so we can expect to draw many cards) while it can be played as a land so it’s nearly a strict upgrade from a Forest.
Bridgeworks Battle // Tanglespan Bridgeworks adds to our arsenal another target removal spell (which is very welcome since our score in that category is a bit low) while it can be played as a land so it’s nearly a strict upgrade from a Forest.
Elvish Piper is a staple in green decks for cheating big creatures onto the battlefield, so it naturally fits with our Wurm Tribal, since most of our Wurms have a very high mana cost.
Belbe’s Portal gets cut because it serves the same utility but is more mana hungry.
Goreclaw, Terror of Qal Sisma naturally fits our Wurm Tribal, since most of our Wurms have both a very high mana cost and 4+ power. On attack trigger, it gives our creatures +1/+1 and Trample until end of turn and that give our deck more consistency.