Steel of the Godhead 

Enchantment — Aura
Enchant creature
As long as enchanted creature is white, it gets +1/+1 and has lifelink. (Damage dealt by the creature also causes its controller to gain that much life.)
As long as enchanted creature is blue, it gets +1/+1 and can't be blocked.
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Cards that do something similar expected a card that isn't here?
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Scourge of the Nobilis 100%
$0.12#17999
"As long as enchanted creature is white, it gets +1/+1 and has lifelink."
+2 more matching lines
Staggering Insight 84%
$0.34#5444
"Enchanted creature gets +1/+1 and has lifelink and "Whenever this creature deals combat damage to a player, draw a card.""
+1 more matching line
Blood-Cursed Knight 83%
$0.15#22235
"As long as you control an enchantment, this creature gets +1/+1 and has lifelink."
Squire's Devotion 81%
$0.17#15181
"Enchanted creature gets +1/+1 and has lifelink."
+1 more matching line