Heres more 3E/3.5 dragon mag creatures.
#294- None
#295-Siege Golem (Bazaar of the Bozarre and the Wall Came Tumbling Down.......); Cataboligne Demon, Gingwatzim [Pakin, Gaegzim, Eoluzim, Maronzim, Naranzim] (Monstrous Denzens of Oerth)
#296- (dont have it)
#297- Rabbi Low's Golem, The Sphinx (Relics of Myth Epic Items Inspired by the Real World); Nether Creature Template, Nether Ogre Mage (Silcon Sorcery ICO)
#298- Aracholoth, Spiderleg Horror, Brood Mother, Proxy of Lolth (The Bestiary: The Punishments of Lolth)
#299- Blood Horse, Catoblepas (now in MM2 as well), Glamer, Shadowvig, Tree Troll, Veserab (The Bestiary: The Horrors of Cormyr); Golden the Clockwork Cat (Bazaar of the Bizarre: Wizards Toy Box)
#300- Howling Dragon, Pyroclastic Dragon, Rust Dragon, Styx Dragon, Tarterian Dragon (The Bestiary: Hellish Fangs on Abyssal Wings); Mummified Creature, Ghost Brute Creature, Wight, Wraith (The Risen Dead Four New Undead Templates)
#301- Scrags, Fiendish Trolls, Half-Fiend/Half-Troll, Ice Troll, Deep Sea Troll, Slime troll (Ecology: Malignant Growth The Ecology of the Troll); Dragoconic Creature Template (Guild Secrets: Claw of Gold)
#302- Web Golem, Alchemical Golem, Mud Golem, Rope Golem, Puzzle Golem (Bestiary: Construct of Destruction Five New Golems); Glyph Guardian Template, Old One Guardian, Battle Horror, Minogon (Silicon Sorcery: Neverwinter Nights)
#303- Skeletal Intellect Devourer, Battle Intellect Devourer, Creator Race, Spirit of the Woods Template (Silicon Sorcery: The Lost Horrors if Neverwinter Nights)
#304- Changeling, Cystalline Cat, Force of Nature, Green Guardian, Spark, Seelie Court Fey Template, Unseelie Fey Template (Guardians of the Wild Fey Born Fair and Foul)
#305- Dont own it
#306- Air Demon, Ash Demon, Earth Demon, Fire Demon, Ice Demon, Water Demon, Coal Devil, Glass Devil, Lead Devil, Obsidian Devil, Dand Devil, Spiked Devil, Arrow Battleloth, Axe Battleloth, Cross-Bow Battleloth, Pick Battleloth, Spiked Chain Battleloth, Sword Battleloth (By Evil Bound)
#307- Half-Air Elemental Template, Air Element Template, Air Genasi (Open Skieas The silver Strike Guild), Dweomervore, Splinterwaif, Trap Haunt Template, Wilora (Monsters in the Alley), Bodak Template, Ghoulish Template, Ghastly Template, Scion of Kyuss Template (4 New Undead Templates Risen Dead)
#308- Ironmaw Seedling (Demon Forests the Ecology of the Ironmaw); Stronarm Carapace, fastbreak Carapace, Hardy Carapace, Slippery Carapace, Silent Carapace, Backwatcher Carapace, Mnempnicus, Wriggler (Armed to the Tentacle The Illithed Arsenal)
Start of the 3.5 dragon mags
#309- Crawling Slaughter, Death Hurler, Golem Swarm, Guardian Steed, Warddrake (Bestiary: Beasts of the Battlefield War Constructs and Creatures)
#310- None
#311- None
#312- None