Man, people are
all over Wizard's Tower. Here are my rambly thoughts:
In which matchups does the Wizard want to cast a Tower? What spell does the Wizard want on the tower for those matchups? How often does the Wizard plan to use the tower? Does the Wizard's chosen element matter?
Fireball seems like it'd make a good
Supression Device but in what matchup does the Wizard want to cast fireball every turn? Lightning Bolt is a similar option, also for 8 mana. Maybe against Beastmaster or Warlord? Akiro's Hammer is not very popular, but it does seem like it has a good matchup against the Wizard's Tower. If the Wizard is reduced to 3 or 4 mana on turns the Tower fires, is the extra action really that important?
Geyser is an option, and it's much cheaper, and would help put out fires started by a Warlock, maybe. 5+ daze seems pretty good, but is that just a bad Temple of Light impression? Pillar of Light is a similar option with a 4+ daze and a 11+ Stun, but only does 2 damage for 5 mana. Is that something Wizard wants to do every turn?
Jet Stream seems like another candidate, with a 4+ push, but I've had that on a wand before and wasn't that impressed. Maybe with the free action it's much better, especially in combination with Wall of Thorns or Wall of Fire? 4 mana would be a reasonable cost to spam with a channeling of 12 or so.
Is Wizard's Tower worth playing against a ground assault by 2 or more Knights of Westlock? I'm tempted to spam lightning spells at Knights (or other things with lightning +2), but I don't want to spend 8 mana only to have the attack bounce off a defense. I guess that's what Arc Lightning is for. Die Bobcat, Die!