Apparently you need help from a self summoning Unshaven Angler that resets ATK scores.
VJMP-JP181 Ankoku Kishi Gaia Origin (Origin Gaia the Fierce Knight)
Level 4 EARTH Warrior Effect Monster
You can only use the (1) and (3) effects of this card’s name once per turn.
(1) You can send 1 Level 5 or higher monster from your hand to the GY; Special Summon this card from your hand.
(2) This card can be treated as 2 Tributes for the Tribute Summon of a Warrior monster.
(3) During the Battle Phase (Quick Effect): You can banish this card from your GY, then target 1 face-up monster on the field whose current ATK is different from its original ATK; its ATK becomes its original ATK.