Thanks to Queza's Esper (white/blue/black) color identity, you have access to many of the best cycling support cards, namely in white and blue, which have a lot of options to choose from when it comes to filling your deck with cycling cards
This two drop single handedly made Spirits a viable archetype in Modern, and its a Commander staple
Like any free-to-cast card, Force of Vigor can catch players completely off guard, disrupting the boardstate when they would normally assume you can't interact at all
MIRRIS GUILE While drawing extra cards is the part we all remember about Sylvan Library, its the fact you can re-arrange the top of your library regardless of if you pay life to take more cards that makes the card strong
+1/+1 counters obviously feature heavily, but a few other counter types also make the cut in Counter Blitz