Part the Waterveil

Awaken is the wrinkle that lifts this above every other extra-turn spell, and the reason is structural. The base mode is the familiar bargain: for a single additional turn, then exile, with no loop back to itself the way older Time Walk effects threatened. The flaw in that bargain has always been that an extra turn does nothing if you have no board to spend it on; a free draw step rarely closes a game. Pay and the spell answers its own objection. The extra turn arrives with a hasty attacker already stapled to a land you control, a 0/0 propped up by six +1/+1 counters, so the turn you just bought is one where a fresh threat is swinging the moment you untap. The land-as-creature framing cuts both ways. The awakened permanent keeps its land type, so it survives sweepers that only hit nonland permanents and keeps producing mana through them, but the day you point a Wrath of God at the board it dies with everything else, because it is now a creature in every relevant sense. And a 0/0 held up by counters means any effect that strips counters can erase the threat without touching the extra turn it already handed you. The whole design reads as a thesis statement for awaken: one card scaling from a midrange tempo swing into a top-end finisher purely on how much mana you are willing to sink into it.