Gozdegek, the Living Tombstone

When Gozdegek, the Living Tombstone enters
the battlefield, return all walls in your graveyard
and in exile to the battlefield. Untap them. Until
end of turn, all walls you control gain haste and
become green and black elemental creatures with
"This creature deals combat damage equal to it's
toughness rather than it's power."
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"To die and be dead is to be a coward. To ascend from death, to become something far stronger than wha