3 is completely intentional
The Destined White Mage | Illustration by David Rapoza Clerics in MTG are creatures with the cleric subtype
This effect does not activate and will resolve immediately after the card(s) are sent to the graveyard
Monsters with 2000 or less ATK cannot declare an attack, except for Psychic-Type monsters

Acererak the Archlich Balthor the Defiled Belbe, Corrupted Observer Bladewing the Risen Boris Devilboon Daxos the Returned Dee Kay, Finder of the Lost Dralnu, Lich Lord Ebondeath, Dracolich Geth, Lord of the Vault Geth, Thane of Contracts Glissa Sunslayer Glissa, Herald of Predation Glissa, the Traitor God-Eternal Bontu God-Eternal Kefnet God-Eternal Oketra God-Eternal Rhonas Gorex, the Tombshell Grimgrin, Corpse-Born Grusilda, Monster Masher Haakon, Stromgald Scourge Hancock, Ghoulish Mayor Hashaton, Scarab's Fist Jarad, Golgari Lich Lord Jason Bright, Glowing Prophet Josu Vess, Lich Knight Korlash, Heir to Blackblade Kotis, Sibsig Champion Kotis, the Fangkeeper Kraum, Ludevic's Opus Kraum, Ludevic's Opus Kraum, Violent Cacophony Lord of Tresserhorn Mikaeus, the Unhallowed Narfi, Betrayer King Neheb, Dreadhorde Champion Neheb, the Eternal Nekusar, the Mindrazer Nevinyrral, Urborg Tyrant Olag, Ludevic's Hubris Polukranos, Unchained Ratadrabik of Urborg Raul, Trouble Shooter Sedris, the Traitor King Sidisi, Regent of the Mire Sidisi, Undead Vizier Skullbriar, the Walking Grave Storrev, Devkarin Lich Temmet, Naktamun's Will Thraximundar Tormod, the Desecrator Tymaret, the Murder King Varina, Lich Queen Venser, Corpse Puppet Vogar, Necropolis Tyrant Wilhelt, the Rotcleaver Zahur, Glory's Past Zul Ashur, Lich Lord

Having your big bomb get countered even before you get to do anything with it can be incredibly disheartening