Emerald shield - always handy when there are those annoying Aether mono decks with Shard of Wisdom.
I remember back then when I was against someone who used Emerald Shield. I was saving up Quanta in order to Direct Damage him using Ice Lance (I'm a
player). Once I had enough Quanta, I gave everything that I'd got and... all that Damage was reflected to me.
Mitosis. Watching a Fate Egg make a Fate Egg is hilarious.
Sometimes I just want to see a Fate Egg which Hatches into Mummy, then Reversed into Pharaoh, killed into Skeleton, and Reversed to a Fate Egg... again.
As for me, my favorite
cards are Emerald Shield due to the reason above, and Rustler merely due to the unique atwork.