
Land
: Add
.
,
: Creatures you control gain deathtouch and lifelink until end of turn.

Another WB-producing utility land for the same color identity.

WB dual land that also gains life, fits the lifegain theme.

Painland producing W or B for two-color fixing.

WB shockland providing efficient dual-color fixing.

Colorless utility land alternative producing relevant mana.

Grants lifelink to your creatures, similar combat-anchor effect.

Equipment giving deathtouch and lifelink, mirroring the activated ability.

Aura that grants deathtouch as a combat trick like the land's ability.
→ Infinite lifegain
Multiple instances of deathtouch or lifelink on the same creature are redundant.
Vault of the Archangel's last ability affects only creatures you control when that ability resolves. It won't affect creatures that come under your control later in the turn.