
Avacyn, Guardian Angel | Legendary Creature | Angel | Flying, vigilance
{1}{W}: Prevent all damage that would be dealt to another target creature this turn by sources of the color of your choice.
{5}{W}{W}: Prevent all damage that would be dealt to target player or planeswalker this turn by sources of the color of your choice. | Winona Nelson

Meditation Puzzle | Instant | | Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
You gain 8 life. | Mark Winters

Sanctified Charge | Instant | | Creatures you control get +2/+1 until end of turn. White creatures you control also gain first strike until end of turn. (They deal combat damage before creatures without first strike.) | Dave Kendall

Spectra Ward | Enchantment | Aura | Enchant creature
Enchanted creature gets +2/+2 and has protection from all colors. This effect doesn't remove Auras. (It can't be blocked, targeted, or dealt damage by anything that's white, blue, black, red, or green.) | Ryan Alexander Lee

Tireless Missionaries | Creature | Human Cleric | When Tireless Missionaries enters the battlefield, you gain 3 life. | Dave Kendall

Sliver Hivelord | Legendary Creature | Sliver | Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.) | Aleksi Briclot