Thopter Squadron 
Artifact Creature — Thopter
Flying
This creature enters with three +1/+1 counters on it.
{1}, Remove a +1/+1 counter from this creature: Create a 1/1 colorless Thopter artifact creature token with flying. Activate only as a sorcery.
{1}, Sacrifice another Thopter: Put a +1/+1 counter on this creature. Activate only as a sorcery.
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Pentavus 99%
$0.26#10624
"{1}, Remove a +1/+1 counter from this creature: Create a 1/1 colorless Pentavite artifact creature token with flying."
+2 more matching lines
Hexavus 97%
$0.41#7882
"{1}, Remove a +1/+1 counter from this creature: Put a flying counter on another target creature."
+1 more matching line
Barkhide Troll 96%
$0.18#25118
"{1}, Remove a +1/+1 counter from this creature: This creature gains hexproof until end of turn."
+1 more matching line
Spike Weaver 95%
$4.99#10135
"{1}, Remove a +1/+1 counter from this creature: Prevent all combat damage that would be dealt this turn."
+1 more matching line
Triskelavus 94%
$0.23#19003
"{1}, Remove a +1/+1 counter from this creature: Create a 1/1 colorless Triskelavite artifact creature token with flying. It has "Sacrifice this token: This token deals 1 damage to any target.""
+1 more matching line
Spike Breeder 91%
#26649
"{2}, Remove a +1/+1 counter from this creature: Create a 1/1 green Spike creature token."
+1 more matching line
Spike Hatcher 89%
#28666
"{1}, Remove a +1/+1 counter from this creature: Regenerate this creature."
+1 more matching line
Golgari Grave-Troll 89%
$2.24#2648
"{1}, Remove a +1/+1 counter from this creature: Regenerate this creature."
+1 more matching line
Spike Tiller 83%
$0.26#27605
"{2}, Remove a +1/+1 counter from this creature: Target land becomes a 2/2 creature that's still a land. Put a +1/+1 counter on it."
+1 more matching line
Intrepid Tenderfoot 80%
$0.10#22318
"{3}: Put a +1/+1 counter on this creature. Activate only as a sorcery."
Feral Hydra 80%
$0.37#9365
"{3}: Put a +1/+1 counter on this creature. Any player may activate this ability."
+1 more matching line