Skilled White Magician

Ward {p/w}
Whenever a player casts an instant or sorcery,
put a Spell counter on this creature.
{w}{w}{w}; Remove three Spell counters and
sacrifice this creature: Put a 6 mana or less
Warrior creature from your hand, graveyard, or library onto your battlefield.(Activate only as a
sorcery and if you choose library, shuffle after.)