Favorable Destiny
{1}{W}
Enchantment -- Aura
Enchant creature
Enchanted creature gets +1/+2 as long as it's white.
Enchanted creature has shroud as long as its controller controls another creature. (It can't be the target of spells or abilities.)
Phyrexian Boon
{2}{B}
Enchantment -- Aura
Enchant creature
Enchanted creature gets +2/+1 as long as it's black. Otherwise, it gets -1/-2.
Serra's Boon
{2}{W}
Enchantment -- Aura
Enchant creature
Enchanted creature gets +1/+2 as long as it's white. Otherwise, it gets -2/-1.