{1}{W}: Target attacking Zombie gains lifelink until end of turn.
{1}{B}: Target attacking Zombie gains deathtouch until end of turn.
Multiple instances of lifelink and deathtouch are redundant.
The target Zombie will still have lifelink or deathtouch even after combat when it stops being an attacking creature.
Unraveling Mummy’s abilities can target itself while it’s attacking.