Many modern Commander pre-con decks try to build around two core mechanics , and Quandrix Unlimited uses the aforementioned X-cost spells but also +1/+1 counters
These cards are incredibly frustrating to play against, being unfair and feeling almost like cheating, or preventing your deck from even being able to function
Then you can also trample and menace so double evasion there
Necrobloom Commander decks are focused on lands, and with how many green cards synergize with it, most of the deck consists of green cards
Unfortunately, the movement couldn't happen until you had two or more Rooms open, so it took a while for the fun part of the mechanic to kick in, so the next version had multiple Rooms per card
If you do, put a +1/+1 counter on this Vehicle and it gains menace until end of turn