Curse of Predation 
Enchantment — Aura Curse
$0.20 #14520 0.25 12.8 years
Enchant player
Whenever a creature attacks enchanted player, put a +1/+1 counter on it.
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Gleam of Battle90%
$0.16↓#135750.2013.3 years
"Whenever a creature you control attacks, put a +1/+1 counter on it."
Armory of Iroas84%
$0.22↑#7937↑0.2212.3 years
"Whenever equipped creature attacks, put a +1/+1 counter on it."
Bone Sabres84%
$5.73↑#5958↑0.243.9 years↓
"Whenever equipped creature attacks, put four +1/+1 counters on it."
Leader's Talent82%
$0.62↑#10284↑0.00↓0.5 years↓
"Whenever you attack, put a +1/+1 counter on target attacking creature."
Curse of Vitality81%
$1.24↑#124670.209.0 years↓
"Whenever enchanted player is attacked, you gain 2 life. Each opponent attacking that player does the same."
+1 more matching line
Fangren Firstborn80%
$2.32↑#155530.1722.6 years↑
"Whenever this creature attacks, put a +1/+1 counter on each attacking creature."
Andúril, Narsil Reforged80%
$15.41↑#2604↑0.41↑2.8 years↓
"Whenever equipped creature attacks, put a +1/+1 counter on each creature you control. If you have the city's blessing, put two +1/+1 counters on each creature you control instead."
Seismic Tutelage77%
$0.88↑#11409↑0.00↓0.8 years↓
"Whenever enchanted creature attacks, double the number of +1/+1 counters on it."
+1 more matching line
Drana, Liberator of Malakir77%
$0.88↑#1521↑0.1910.9 years↓
"Whenever this card deals combat damage to a player, put a +1/+1 counter on each attacking creature you control."
Curse of Verbosity76%
$0.49↑#3792↑0.49↑9.0 years↓
"Whenever enchanted player is attacked, you draw a card. Each opponent attacking that player does the same."
+1 more matching line
Armasaur Guide76%
$0.17↓#17748↓0.05↓1.8 years↓
"Whenever you attack with three or more creatures, put a +1/+1 counter on target creature you control."
Curse of Disturbance76%
$0.59↑#4121↑0.359.0 years↓
"Whenever enchanted player is attacked, create a 2/2 black Zombie creature token. Each opponent attacking that player does the same."
+1 more matching line
Curse of the Forsaken75%
$0.27↑#170500.3112.8 years
"Whenever a creature attacks enchanted player, its controller gains 1 life."
+1 more matching line
Shape of the Wiitigo74%
$0.41↑#25332↓0.2920.1 years↑
"At the beginning of your upkeep, put a +1/+1 counter on enchanted creature if it attacked or blocked since your last upkeep. Otherwise, remove a +1/+1 counter from it."
Basri, Devoted Paladin74%
$0.64↑#22490↓0.166.2 years↓
"−1: Whenever a creature attacks this turn, put a +1/+1 counter on it."
Black Panther, Claws of Bast74%
$2.06↑#22263↓0.00↓0.2 years↓
"Whenever a creature you control attacks alone, put a +1/+1 counter on it."
Greatsword of Tyr74%
$0.39↑#7230↑0.324.2 years↓
"Whenever equipped creature attacks, put a +1/+1 counter on it and tap up to one target creature defending player controls."
Vrestin, Menoptra Leader73%
$0.33↑#136210.71↑2.9 years↓
"Whenever you attack with one or more Insects, put a +1/+1 counter on each of them."
Basri Ket72%
$1.23↑#6941↑0.65↑6.2 years↓
"−2: Whenever one or more nontoken creatures attack this turn, create that many 1/1 white Soldier creature tokens that are tapped and attacking."
Forced Adaptation72%
$0.17↓#8317↑0.50↑13.6 years
"At the beginning of your upkeep, put a +1/+1 counter on enchanted creature."
+1 more matching line