A Field Spell and an Odd Continuous

[Angel of Silence]

Field Spell:
[img]http://img535.imageshack.us/img535/7221/107744.jpg[/img]
Lore: While this card remains face-up on the field, all face-up monster's ATK and DEF become 500 and their effects are negated. If this card would be destroyed by a card effect, you can tribute 1 monster you control to negate the activation of that card and destroy it.
Continuous:
[img]http://img233.imageshack.us/img233/7221/107744.jpg[/img]
Lore: As long as this card remains face-up on the field, there may be three different field spell cards with different names activated at the same time. If there are three field spell cards on the field this card cannot be destroyed. As long as there are three field spell cards neither player can Summon monsters from their Extra Deck.

Both are kind of plain, and the second one's pic isn't the best. Comments and criticism welcome!

Edit: Updated

[ragnarok1945]

2nd one is a bit OPed

but then, if your opponent can use the effect as well then maybe it could work, but even then

"If this card would be destroyed by a card effect, you can tribute 1 monster you control to negate the activation of that card and destroy it." <--that effect for the 1st one should be limited to once per turn

7/10

[Angel of Silence]

For the second one the opponent can use it as well. It's three field cards total, so you and your opponent can have a total of three.

[s]And I'll limit the first one then.[/s] Updated.

[ragnarok1945]

better, I'll raise the rate to 8.2/10

[MibeR]

First one is broken, because it can make all monsters have 500 ATK. that is

Second --> That 3 spell at the same time? do you mean turn? If yes, this effect is unnecessary. i rare to see somebody play their Spell Card 3 names in one turn unless it is an well-prepared attack