Bull's Strength

Pumping stats and granting trample is well-trodden green ground; the untap clause is what gives this trick a second live moment inside a single turn. The obvious use is the aggressive one: pump an attacker before damage, and the trample turns a chump-block into wasted defense. But cast it during your opponent's declare-attackers step on a creature you had already tapped to attack, and the blocker they counted out comes back untapped and two points bigger, ready to answer a swing you thought you had sold your board to. That instant-speed reset is the real reason to run it over a flat +2/+2: the trample matters on offense, and the untap matters on defense, so the two clauses each carry a different phase of the turn rather than stacking on the same one. It also cooperates with tap-to-activate creatures, letting you attack and still hold the ability open, though that use is narrower than the combat trickery. The one caveat worth stating: the buff lasts until end of turn, so nothing carries into a crack-back on your following turn; the untap is about dragging the body back into a decision this turn, not banking stats for the next. Nothing here pushes the power ceiling. The rate is modest on a familiar green template, and what the untap does is quietly double the windows in which the card is worth holding up.