Glassdust Hulk
Artifact Creature — Golem
Whenever another artifact you control enters, this creature gets +1/+1 until end of turn and can't be blocked this turn.
Cycling 
Franz Vohwinkel
Double Masters (2XM)
• #199Rulings
Once a creature has blocked Glassdust Hulk, resolving its triggered ability won't cause it to become unblocked.
(wotc • 2020-08-07)
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Rulings
Once a creature has blocked Glassdust Hulk, resolving its triggered ability won't cause it to become unblocked.
(wotc • 2020-08-07)