Karlach, Flame of Giantkin

Vigilance, Pallidwalk (can't be blocked if attacking an opponent with a colorless land)

When attacking during any combat phase other than the first, create a 3/3 red giant creature token with menace tapped and attacking

{r/g}{r/g}: Give target creature a burst token (if creature survives the first combat phase, its damage is removed and gains double strike and vigilance for all other combats this turn)