Stalactite Stalker 
Creature — Goblin Rogue
Menace
At the beginning of your end step, if you descended this turn, put a +1/+1 counter on this creature. (You descended if a permanent card was put into your graveyard from anywhere.)
{2}{B}, Sacrifice this creature: Target creature gets -X/-X until end of turn, where X is this creature's power.
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Deep Goblin Skulltaker 100%
$0.15#18368
"At the beginning of your end step, if you descended this turn, put a +1/+1 counter on this creature."
+1 more matching line
Child of the Volcano 100%
$0.11#22136
"At the beginning of your end step, if you descended this turn, put a +1/+1 counter on this creature."
Nim Replica 97%
$0.12#31304
"{2}{B}, Sacrifice this creature: Target creature gets -1/-1 until end of turn."
Cabal Patriarch 90%
$0.14#26383
"{2}{B}, Sacrifice a creature: Target creature gets -2/-2 until end of turn."
Erebos, Bleak-Hearted 90%
$1.73#4022
"{1}{B}, Sacrifice another creature: Target creature gets -2/-1 until end of turn."
Chittering Witch 90%
$0.30#3132
"{1}{B}, Sacrifice a creature: Target creature gets -2/-2 until end of turn."
Prairie Dog 84%
$0.19#22393
"At the beginning of your end step, if you haven't cast a spell from your hand this turn, put a +1/+1 counter on this creature."
Wall of Resistance 84%
$0.19#21352
"At the beginning of each end step, if this creature was dealt damage this turn, put a +0/+1 counter on it."
Whirling Dervish 83%
$0.34#28595
"At the beginning of each end step, if this creature dealt damage to an opponent this turn, put a +1/+1 counter on it."
Dunerider Outlaw 83%
$0.05#26613
"At the beginning of each end step, if this creature dealt damage to an opponent this turn, put a +1/+1 counter on it."
Wolverine, Best There Is 82%
$26.90#7098
"At the beginning of each end step, if this card dealt damage to another creature this turn, put a +1/+1 counter on him."
Warden of the Grove 81%
$1.99#2349
"At the beginning of your end step, put a +1/+1 counter on this creature."
Passageway Seer 81%
$0.20#10886
"At the beginning of your end step, if you have the initiative, put a +1/+1 counter on this creature."
Insatiable Skittermaw 80%
$0.19#16821
"At the beginning of your end step, if a nonland permanent left the battlefield this turn or a spell was warped this turn, put a +1/+1 counter on this creature."
+1 more matching line
Kavaron Skywarden 80%
$0.13#21614
"At the beginning of your end step, if a nonland permanent left the battlefield this turn or a spell was warped this turn, put a +1/+1 counter on this creature."
Interceptor Mechan 80%
$0.22#13426
"At the beginning of your end step, if a nonland permanent left the battlefield this turn or a spell was warped this turn, put a +1/+1 counter on this creature."
Vashta Nerada 80%
$3.00#5213
"At the beginning of each end step, if a creature died this turn, put a +1/+1 counter on this creature."