The first one is batter for AI3 because it is faster (more pillars, can get shriekers out faster. For that one you could replace a pillar with a longsword. For T50 earthquakes will help against decks made by people. You need more defense against people. The dragons is expensive and you have less pillars so try replacing the dragon with an earthquake or the dragon and a shrieker with 2 reverse times. See youe previous post with 3 decks these comments about the shrieker deck come from there. I tried them an I think they would help vs the Top 50.