The body of the shield was made out of (laminated) wood and they were often used in formations of units. They are quite unwieldy and giving them a -5 feet to movement + 3/4 cover against ranged attacks from the front sounds like a good homebrew to me. Those could be the “normal” +2 AC shields D&D 5e has in the PHB.
Is the Homebrew tower shield overpowered in 5e?
In my current 5e game the DM allowed our paladin to purchase this shield that was homebrewed by the DM: This massive shield is used frequently in organized armies for its effectiveness at protecting soldiers and aiding in the formation of lines. You have half cover.
Can you use a shield with spikes on?
You could homebrew that a shield with spikes on could inflict 1d6 damage, instead of the shove. As it’s effectively an offhand attack, it doesn’t gain STR bonus to damage. If you need help with homebrew, please post on the homebrew forums, where multiple staff and moderators can read your post and help you!
Which is better a + 2 shield or a + 1 Shield?
The reason this is not strictly better than a +2 Shield is because it does not stack with other sources of cover (and can be nullified by features that ignore cover). A +2 Shield is a rare magic item which according to DMG guidelines is appropriate for characters of level 5 or higher.
What are the effects of different shield sizes?
Just an alt rule idea for different shield sizes and their effects. Buckler shield (small shield) +1 AC, requires DEX 13 Wooden round shield (medium shield) +2 AC, D&D Standard Metal tower shield (large shield) +3 AC, requires STG 14, disadvantage on stealth checks. What do you think?
How does the shield wall work in RuneScape?
Shield Wall: this shield gives a +1 bonus to its base AC for each ally using a shield with this property within 5 feet of you, to a maximum of +2 bonus AC; to gain this bonus, you must be standing. Using this shield while riding a mount imposes disadvantage on your attacks.