Stalemate Attack & Battle Morph

[Medivh]

Stalemate Attack
Trap / Counter
Activate only when your opponent's monster declares an attack. The ATK of the attack target becomes that of the attacking monster.

Battle Morph
Spell / Equip
Equip only to a face-up Attack Position monster. The equipped monster cannot change it's Battle Position. The Equipped monster's ATK is equal to the ATK of the monster with the highest ATK on the field (If there are no monsters on the field, the equipped monster's ATK becomes 0 instead).

[Anbu-of-Sand]

It's For stall and nothing else. Perhaps remove the monsters cannot be destroyed by battle part and it could be a bit better in my opinion. This way you can say, get to monsters destroyed and that one monster of yours being possible say, Sangan, which in the end will get one of your opponents monsters destroyed and still giving you the search. Then again, that's only if you put your Sangan in ATK.

[Medivh]

Fixed Stalemate Attack and added Battle Morph.

[Anbu-of-Sand]

Battle morph is pretty nice since it practically makes your monster a beat stick but a wall as well (since your opponent will have to sacrifice his own in order to take it out). The drawback however will never happen because as soon as your opponent gets monster it'll go back to normal. Perhaps add something else like battle damage that monster inflicts is halved instead? Otherwise it's pretty nice.

[Bahamut - Envoy of the End]

Why do these cards make me think of Numbers...? Oh yeah...

Can't think of any monsters with battle immunity other than Marshmallon, so unless you want to be very trolly with that, I'd say Power Frame is slightly better than stalemate. Battle Morph seems okayish.