Evident's Comments
Fibonacci's Season 25 Dragon Warrior
Maybe Drakonid Crusher, but I wouldn’t add Varian. He’s slow and doesn’t allow you to play anything but him on a turn. You also lose out on the Battlecry effects.
Midrange Fast Druid Deck List Guide - April 2016 (Season 25, Wild)
This is a faster deck and Ancient of War is a slower card. Ancient of Lore is mainly to help you draw into your combo pieces or minions to finish the game.
Rase's Season 25 Rank #1 Ramp Druid
Maybe for the Mind Control Tech, but I would keep it as is.
Shifter Zerus
No, once the card shifts it will be the cost of the card it shifted into.
Midrange Fast Druid Deck List Guide - April 2016 (Season 25, Wild)
Cenarius is a bit too slow for this deck. Loatheb can protect your board and lead into a combo very nicely. Cenarius is good in Ramp Druid: http://www.hearthstonetopdecks.com/decks/rases-season-25-rank-1-ramp-druid/
Secrets Paladin Deck List Guide - April 2016 (Season 25, Wild)
Second Sludge Belcher, Ragnaros, or Sylvanas.
The Age Of Nightblade Combo Rogue
This deck looks very interesting, thanks for submitting!
Congrats!