Gnomish Mageglove (A)

Attunement by a spellcaster
Arcane focus poss. Attempt to cast a spell you
don`t know/haven`t prepared and is on your class
spell list and of a lv you have a spell slot. spell's components must be provided.
Expend a spell slot to cast the spell as normal,
but before resolving it you must make an Arcana
check. DC=10+2xlevel of the spell slot. Success
cast normal, your DC and spellcasting ability
modifier.