Bestow {W}{W}{W}{W}{W} (If you cast this card for its bestow cost, it's an aura spell with enchant Construct creature. It becomes a creature again if it's not attached to a creature.)

Enchanted creature gains +2/+4.

Totem Armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this aura.)

If C-Crush Wyvern is sent from the field to the graveyard: you can put one Construct creature with converted mana cost 4 or less from your hand onto the battlefield tapped.