At six mana, Armada Wurm is powerful in 60 card decks as an ideal Closer of Games
These subtypes only ever appear on the corresponding types of cards
The obvious play pattern of swapping the textbox of, lets say a Crab, with Ulamog, the Ceaseless Hunger, but Id rather turn planeswalkers or artifacts into creatures and swap the planeswalkers ability with one of my creatures
Dimir Mill (2 players): Mill has the straightforward game plan of depleting the opponent's library as quickly as possible, using cards like Hedron Crab and Archive Trap to great effect
Overgrown Battlement 5 Vine Trellis is fine filler but it isn't great
Add Vorinclex to the mix, and those small upgrades become massive leaps, turning even something as harmless as Llanowar Elves into a massive threat after just a few triggers