Vault Guardsman

Flicker-style exile removal that hands back the answered permanent when the body dies is a well-worn white template: Banisher Priest and Fiend Hunter established the shape, and everything since has traded a fragile creature for temporary custody of the opponent's best permanent. Convoke is what changes the tempo math on that effect, which normally demands full price. Here you can deploy the removal off a wide board without spending your turn's real mana, so the exile lands the same turn you empty your hand of creatures rather than a turn later. The exile itself is broad (artifact or creature), which matters in a white shell that wants a single answer for both a threatening body and a combo artifact without splashing. The catch is the one this archetype has always carried: the exile is stapled to a 3/4 that any spot-removal or bounce effect will unstick, returning the opponent's permanent at an inconvenient moment. That built-in reversibility is the tax the design pays for putting flexible exile on a convokable creature you can drop early. The card works best not as a standalone answer but as a way to spend a crowded board on erasing a problem while the rest of your creatures stay on the table.