Diamond Weapon I mean, its big and its potentially very cheap, though reach isnt really the keyword Im looking for on a card like Diamond Weapon
Though not very tough, playing Snapcaster allows you to recast any instant or sorcery card in your graveyard
Changing the target of a removal spell is obvious, but more common is giving a counter an illegal target, fizzling it
If you don't control any creatures with power 4 or greater when the ability resolves, the ability won't do anything
The difference between having something in your hand and nothing is a huge improvement for gameplay, both because it allows hidden information and creates more dynamic gameplay situations
You can implement as many themes as you want into your deck, but remember that the more themes you cram in, the less impact your other themes have