Your opponents are incentivized to kill omer, but doing so during combat procs its ability, so it will likely go unblocked
It's probably the hardest zone to wrap your head around, so I'd recommend further reading
Elite Interceptor // Rejoinder looks best suited for a tempo or blink-based Azorius (white-blue) deck that values flexibility, incremental card draw, and battlefield control, especially one that can repeatedly reset or reprepare creatures to reuse the spell-copy effect
Martial Impetus and Baird, Steward of Argive both add a little pillow fort-style protection to the deck, but neither one does it well
This complete 100-card commander deck was hand-assembled using authentic Magic: The Gathering
In fact, I've written numerous articles on cycling: A Cycling Built For Two This is the column I wrote during the first Cycling Week and it goes into good detail about how the mechanic got created and what the early versions of it looked like