What better Pokemon to celebrate Valentine's Day than Luvdisc, eh?
Luvdisc is a fairly solid base Pokemon, meant to be used as a starter. 60 HP is common, +10 Weakness to Lightning is to be expected, no Resistance, and 1 Retreat Cost. Rendezvous (lol @ people trying to pronounce it correctly) is a decent attack and cheap for 1 Colorless Energy; you get to draw a card, and if it's a Pokemon card, you get to draw 2 more cards. Synchro Dance is also good for 1 Water Energy, having the potential to do 30 damage if Luvdisc and the Defending Pokemon have the same number of Energy (10 otherwise).
Modified - 4/10 (Ok starter, but there are many better options for starters. Could be funny in a Valentine's Day-themed deck or something)
Limited - 10/10 (Love this card here. Odds that you will get a Pokemon are excellent since half your deck should usually be Pokemon, so that's almost a free 3 cards with Rendezvous)
Unlimited - 1/10 (Fails when comapred to other more useful Luvdisc, which aren't played anyways)