The tap-on-entry buys exactly one turn, and you have to read which turn. Tapping an opposing blocker on your turn clears one swing right now: it untaps on their turn, so this is a single-window tool, not a lock. The haste grant is the half that cashes that window in. Drop the Skateboard, tap a fresh blocker (or a legendary that just resolved), equip, and attack the same turn the rider lands. The +1/+0 is the load-bearing number: a 2/2 becomes three damage and clears the 2/3 that anchors the format's defensive line.
RW Equipment and the Boros aggressive builds want it most, around P1P6 to P1P8 once their two-drop base is settled, because their plan is to turn board presence into damage before the midrange goodstuff decks stabilize. UR Sneak treats it as a low-priority hold: two mana split across two turns competes with the tempo spells the deck would rather deploy, and it rarely has an idle creature waiting on haste. BG Food does not run it.
The tap clause earns its keep against the legendary uncommons. Tapping a Shredder or a mythic Turtle the turn it lands removes a blocker for one attack, which is the opening an aggressive deck needs against a goodstuff board.
Mind the timing on removal. The equip does not tap the creature, so a held Grounded for Life pays full freight while the body is untapped; its discount only comes online after you attack and the creature is tapped. Stomped by the Foot kills the equipped body and floats the Skateboard off unattached. Maindeck it in any RW deck with eight or more two-drops; side it out against grindy BG, where the tempo dies to their removal before it matters.
