Convulsing Licid

{R}, {T}: This creature loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {R} to end this effect.
Enchanted creature can't block.

The List

Stronghold

o
R, oc
T: Convulsing Licid loses this ability and becomes a creature enchantment that reads "Enchanted creature cannot block" instead of a creature. Move Convulsing Licid onto target creature. You may pay o
R to end this effect.

If a spell that can target enchantments but not creatures (such as Clear) is cast targeting the Licid after it has become an enchantment, but the Licid's controller pays the cost, the Licid will no longer be an enchantment. This will result in the spell failing to resolve for having no legal targets.

Paying the cost to end the effect is a special action and can't be responded to.