Sword of the Paruns 
Artifact — Equipment
$0.82 #5451 0.25 20.7 years
As long as equipped creature is tapped, tapped creatures you control get +2/+0.
As long as equipped creature is untapped, untapped creatures you control get +0/+2.
Equip 
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Cards similar to Sword of the Paruns expected a card that isn't here?
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Plargg, Dean of Chaos // Augusta, Dean of Order84%
$0.34↓#12164↓0.00↓5.5 years↓
"Other tapped creatures you control get +1/+0."
+2 more matching lines
Tideforce Elemental77%
$0.32↓#14606↓0.50↑16.7 years↓
"
,
: You may tap or untap another target creature."
Arcades Sabboth74%
$0.20↓#24216↓0.06↓32.4 years↑
"Each untapped creature you control gets +0/+2 as long as it's not attacking."
Bounding Krasis72%
$0.14↓#18079↓0.2811.3 years↓
"When this creature enters, you may tap or untap target creature."
Knotvine Paladin71%
$0.27↓#23137↓0.2017.5 years↓
"Whenever this creature attacks, it gets +1/+1 until end of turn for each untapped creature you control."
Dawnstrike Vanguard70%
$0.18↓#13619↓0.12↓1.2 years↓
"At the beginning of your end step, if you control two or more tapped creatures, put a +1/+1 counter on each creature you control other than this creature."