Samite Healer

{T}: Prevent the next 1 damage that would be dealt to any target this turn.

Sanctimony

Whenever an opponent taps a Mountain for mana, you may gain 1 life.

Savannah Lions

Seasoned Marshal

Whenever this creature attacks, you may tap target creature.

Serra Angel

Treizeci, Sun of Serra

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Solidarity

Creatures you control get +0/+5 until end of turn.

Spirit Link

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Whenever enchanted creature deals damage, you gain that much life.

Standing Troops

Staunch Defenders

When this creature enters, you gain 4 life.

Eighth Edition