Meh, I missed the last 2 CotDs since I was on vacation. Broke my perfect streak also
Anyways, Swampert is a nifty card. Stat-wise, it's average for a Stage 2, with 130 HP, +30 Weakness to something (in this case, Grass), no Resistance, and 2 for a Retreat Cost. Wash Out is the main reason you'd be using this, letting you move :water: or :fighting: energy from your benched Pokemon to your active Pokemon (sadly, not vice versa as well though). Hammer Arm is expensive at 2 Water and 2 Colorless, but it deals a solid 80 damage and lets you discard the top card of your opponent's deck (still, only use if you have to).
Modified - 7/10 (No one's really using it, but it does have potential, as it counters Magmotar via Weakness and if you run Fighting also with him, lets you hit Blissey and such)
Limited - 9/10 (If you can get this out and run a dual Water/Fighting deck, you have some great synergy potential here)
Unlimited - 1/10 (No place for it here really)