Um, why'd a flying
shield have attack? Otherwise, it's a Shield, upped and unupped, for 8|5
, but for 9|6
and 2 cards, you'd give it 1 more damage blocking. Change it to block N+1|N+2 damage and reduce the cost to balance it a little.
Chart:
DR | quanta cost | cost in cards
1 DR | 8 (5)
| 1 card
2 DR | 17 (11)
| 3 cards
3 DR | 26 (17)
| 5 cards
4 DR | 35 (23)
| 7 cards
5 DR | 44 (29)
| 9 cards
6 DR| 53 (35)
| 11 cards.
My reasoning is that, for the first point of DR, you only need the shield. For the second DR, you need the Animate Weapon(for simplicity's sake)
and the second shield. For the third, another Animate Weapon and shield. Only the non-animated shield would give DR, because no creature - so far - can create DR. That's my reasoning.