Geist Trappers 

Creature — Human Warrior
Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)
As long as this creature is paired with another creature, both creatures have reach.
click a line to search just that ability, click more to combine them
Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Nearheath Pilgrim 87%
$0.13#22800
"As long as this creature is paired with another creature, both creatures have lifelink."
+1 more matching line
Wingcrafter 84%
$0.16#7272
"As long as this creature is paired with another creature, both creatures have flying."
+1 more matching line
Elgaud Shieldmate 82%
$0.11#21075
"As long as this creature is paired with another creature, both creatures have hexproof."
+1 more matching line
Spectral Gateguards 81%
$0.10#28113
"As long as this creature is paired with another creature, both creatures have vigilance."
+1 more matching line
Necromancer's Familiar 81%
$0.11#27088
"This creature has lifelink as long as you have no cards in hand."