An activated ability does not count as a spell
I would argue that the Magic equivalent is a low opportunity cost in deckbuilding, which is why good utility lands are always among the most played cards in Constructed
Once in play, Muxus can continue to provide value, gaining +1/+1 for each goblin under its owner's control whenever it attacks
#5 Yomiji, Who Bars the Way As I died, I rejoiced
This means that Chandra, Fire of Kaladesh would deal 2 damage because she is a 2/2
Choose a Dragon-focused commander with a clear payoff Start with a commander that does one main thing extremely well, such as cost reduction, token generation, tutoring, combat amplification, or mana generation