Wall of Resurgence
Oath of the Gatewatch — Uncommon
Creature — Wall
Wall of Resurgence rulings:
1/22/2016 : If you target a land that’s already a creature with Wall of Resurgence’s triggered ability, that land creature’s base power and toughness will become 0/0, overwriting its previous base power and toughness. Other effects that modify its power and/or toughness (including the new and any previously-existing +1/+1 counters) will continue to apply.