it only matters what its power is when the ability resolves
Sacrifice your board to Radiant Lotus and cast a gigantic spell to end the game
Timey-Wimey Cards Added View on Archidekt Artifacts (4) 1 Infinite HourglassInfinite Hourglass 1 Lotus BloomLotus Bloom 1 Mox TantaliteMox Tantalite 1 The Millennium CalendarThe Millennium Calendar Creatures (5) 1 Aeon ChroniclerAeon Chronicler 1 ChronozoaChronozoa 1 Gandalf of the Secret FireGandalf of the Secret Fire 1 Jhoira's TimebugJhoira's Timebug 1 Lavacore ElementalLavacore Elemental Instants (3) 1 DelayDelay 1 Dust of MomentsDust of Moments 1 TimecraftingTimecrafting Sorceries (2) 1 Chronomantic EscapeChronomantic Escape 1 Wheel of FateWheel of Fate Lost to Time Removing cards from a deck, especially one as synergistic as the Doctor Who decks, is always difficult
Gwenna gains +1/+1 counters when you play creatures with power five or greater, which is great when you're ramping out cards like Bladecoil Serpent, Jodah, the Unifier, or a Rootwire Amalgam
3 KB Set symbol - Pokemon TCG Call of 744 1,052
However, my guess would be this card is going to see a lot of play in decks focused on Location cards
