Would probably be sufficient to just have "When ~ attacks, it cannot attack next turn." Lots of stuff inflicts that status, without (officially) a counter to mark it.
12.1.8
Sacrafice Woodland Warrior: Put a +1/+1 counter on a Treefolk creature you control.
Sacrifice Woodland Warrior: Search your library for a Forest card and put it into play tapped. Shuffle your library afterward.
12.1.8
Sleepy Tortious may only attack if it has no Sleepy Counters on it.
Whenever Sleepy Tortious attacks, put a Sleepy Counter on it.
During your upkeep remove a Sleepy Counter from Sleepy Tortious.
12.1.8
Hexproof
Prevent all non-combat damage dealt to Ancient Defender.
These dryads are the guards of the old forest. Their petals are collected as wards of powerful magic
12.1.8 When Trigger Counter resolves you may pay . For each color used to pay counter that many target non-mana triggered or activated abilities.
Would probably be sufficient to just have "When ~ attacks, it cannot attack next turn." Lots of stuff inflicts that status, without (officially) a counter to mark it.
12.1.8 Sacrafice Woodland Warrior: Put a +1/+1 counter on a Treefolk creature you control. Sacrifice Woodland Warrior: Search your library for a Forest card and put it into play tapped. Shuffle your library afterward.
12.1.8 Sleepy Tortious may only attack if it has no Sleepy Counters on it. Whenever Sleepy Tortious attacks, put a Sleepy Counter on it. During your upkeep remove a Sleepy Counter from Sleepy Tortious.
12.1.8 Hexproof Prevent all non-combat damage dealt to Ancient Defender. These dryads are the guards of the old forest. Their petals are collected as wards of powerful magic