Best supported result
Skateboard
When this Equipment enters, tap target permanent. Equipped creature gets +1/+0 and has haste. Equip {1}
The one-mana Equipment is both an artifact-count enabler and an Urza's Saga target. Its enter trigger taps a permanent, while haste lets an Affinity threat attack immediately; the observed lists use it as a compact one-of rather than a card that asks for four slots.
Tournament evidence: Skateboard appeared in 58 Modern decks across 8 separate events, with 58 total registered copies. 58 decks used it in the main deck and 0 used it in the sideboard. Example: Danilo Almeida on Izzet Affinity in Pro Tour Magic: The Gathering | Marvel Super Heroes on 2026-07-17.
Modern tournament pick 2
Sewer-veillance Cam
Flash When this artifact enters or leaves the battlefield, you may tap or untap target creature. {3}{U}, Sacrifice this artifact: Draw two cards.
Flash, an enter-or-leave tap or untap trigger, and a sacrifice outlet make the Cam useful in Oswald Fiddlebender, Emry, Grinding Station, and Song of Creation shells. The four-mana draw mode gives it a real fallback when a combo line does not materialize.
Tournament evidence: Sewer-veillance Cam appeared in 3 Modern decks across 2 separate events, with 7 total registered copies. 3 decks used it in the main deck and 0 used it in the sideboard. Example: Gaëtan Bossy on Azorius Loki in Pro Tour Magic: The Gathering | Marvel Super Heroes on 2026-07-17.