This is certainly true in the case of Blex, Vexing Pest: a Lord for not just Snakes, but also several other niche creature types as well, including Bats, Spiders, and Insects
Wilds of Eldraine brings Commander Will, Scion of Peace to lead this deck based around lifegain to enable his ability reducing the cost of spells, including powerful X-spells with potential for massive effects
So, almost every card incentivizes you to switch back and forth between the two sides whether to adapt to the situation, or to repeatedly farm value from each side a la Huntmaster of the Fells
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Abilities that trigger whenever a creature attacks won't trigger when it enters attacking
I count 19 cards that pump up Wyleth while also fueling our commander's powerful card draw ability -- 5 auras and 14 equipment, plus one equipment tutor