Spare Dagger 
Artifact — Equipment
$0.16 #22165 0.06 5.2 years
Equipped creature gets +1/+0 and has "Whenever this creature attacks, you may sacrifice Spare Dagger. When you do, this creature deals 1 damage to any target."
Equip
(
: Attach to target creature you control. Equip only as a sorcery.)
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Sunfire Torch100%
$0.10↓#227220.132.9 years↓
"Equipped creature gets +1/+0 and has "Whenever this creature attacks, you may sacrifice this card. When you do, this creature deals 2 damage to any target.""
+1 more matching line
Throwing Knife90%
$0.12↓#27380↓0.0511.3 years↑
"Whenever equipped creature attacks, you may sacrifice this Equipment. If you do, this Equipment deals 2 damage to any target."
+1 more matching line
Stensia Uprising84%
$0.29↑#183490.004.9 years
"At the beginning of your end step, create a 1/1 red Human creature token. Then if you control exactly thirteen permanents, you may sacrifice this enchantment. When you do, it deals 7 damage to any target."
Sparktongue Dragon78%
$0.08↓#213520.128.3 years↑
"When this creature enters, you may pay 
. When you do, it deals 3 damage to any target."
Ninja's Kunai78%
$0.24↑#208380.25↑4.7 years
"Equipped creature has "
,
, Sacrifice this card: this card deals 3 damage to any target.""
+1 more matching line
Fire Bowman74%
$7.99↑#31122↓0.1127.5 years↑
"Sacrifice this creature: It deals 1 damage to any target. Activate only during your turn, before attackers are declared."
Goblin Firestarter74%
$0.73↑#29148↓0.0428.3 years↑
"Sacrifice this creature: It deals 1 damage to any target. Activate only during your turn, before attackers are declared."
Seal of Fire74%
$0.17↑#183740.0026.7 years↑
"Sacrifice this enchantment: It deals 2 damage to any target."