Spider-Byte, Web Warden

The bounce-on-entry creature is one of tempo's oldest tools, and the design lives entirely in the breadth of "up to one target nonland permanent." That clause reaches further than the classic templates that only hit creatures: an opposing enchantment, a problematic artifact, a planeswalker, or one of your own permanents when you want to reload an enters-the-battlefield trigger. The "up to" makes it a soft engine rather than a mandatory tempo swing, so an empty board never leaves you stranded holding a 2/2 you cannot deploy for value. That 2/2 body is deliberately unimpressive, because the rate is buying the reset, not the beater; anything larger stapled to a repeatable bounce enabler drifts toward oppressive. Where the card earns its keep is in loops: any way to blink or recur it turns a one-shot tempo spell into a recurring answer to whatever the opponent just resolved, and the ability to target your own board means you can pick up another of your creatures to re-trigger its arrival before replaying it. The bounce resolves as an entry trigger rather than an activated ability, so it happens whether or not the creature survives, which matters against decks that want to kill it in response. This is a modest, honest piece of interaction dressed as a body: unremarkable on its face, quietly load-bearing in any deck built to cast it more than once.