Protective Proposal

Materialize {u}{r}{w} (You may pay an additional {u}{r}{w} as you cast this spell. If you do, put it onto the battlefield as it resolves and it becomes a creature.)
Target creature gets +2/+2 and gains first strike, hexproof, and lifelink until end of turn. If the materialize cost was paid, as Protective Proposal materializes, it becomes a colorless Human Monk creature token with base power and toughness 2/2 with first strike, hexproof, and lifelink.