Homicidal Seclusion 

Enchantment
$0.06 #26231 0.00 14.5 years
As long as you control exactly one creature, that creature gets +3/+1 and has lifelink.
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Cards similar to Homicidal Seclusion expected a card that isn't here?
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Deadly Wanderings92%
$0.15↑#271330.0511.6 years↓
"As long as you control exactly one creature, that creature gets +2/+0 and has deathtouch and lifelink."
Scourge of the Undercity80%
$0.28↑#18564↑0.001.9 years↓
"When this creature enters, another target creature you control gains lifelink until end of turn."
Nearheath Pilgrim76%
$0.08↑#233880.0014.5 years
"As long as this creature is paired with another creature, both creatures have lifelink."
Mortal's Ardor74%
$0.16↑#20582↑0.24↑12.7 years↓
"Target creature gets +1/+1 and gains lifelink until end of turn."
Grotesque Mutation74%
$0.17↑#19191↑0.0010.5 years↓
"Target creature gets +3/+1 and gains lifelink until end of turn."
Mark of the Vampire74%
$0.13↑#15612↑0.0014.3 years
"Enchanted creature gets +2/+2 and has lifelink."
Rosa, Resolute White Mage73%
$2.19↑#5937↑0.50↑1.4 years↓
"At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. It gains lifelink until end of turn."
Sanguine Savior73%
$0.10↑#219790.092.7 years↓
"When this creature is turned face up, another target creature you control gains lifelink until end of turn."
Alabaster Mage73%
$0.19↑#20981↑0.0015.3 years
"
: Target creature you control gains lifelink until end of turn."
Noble Banneret72%
$0.08↑#32283↓0.0710.1 years↓
"As long as you control one or more creatures with a name you noted for cards named this card, this creature and those creatures get +1/+1 and have lifelink."
Moment of Heroism72%
$0.04↓#18596↑0.0015.1 years
"Target creature gets +2/+2 and gains lifelink until end of turn."
Give In to Violence72%
$0.14↑#14025↑0.11↑2.1 years↓
"Target creature gets +2/+2 and gains lifelink until end of turn."
Moment of Defiance72%
$0.06#20490↑0.10↑3.9 years↓
"Target creature gets +2/+1 and gains lifelink until end of turn."
True Conviction72%
$3.91↑#1840↑0.35↑16.1 years↑
"Creatures you control have double strike and lifelink."
Abzan Battle Priest71%
$0.22↑#3680↑0.10↑12.1 years↓
"Each creature you control with a +1/+1 counter on it has lifelink."