Yes you can tap your creature with convoke, saddle, crew or another effect to make it unable to attack
"He (Paul) was charging a premium on packs above what they are worth, just because people wanted to have their pack opened by him, in front of his audience," Roebuck said
Thankfully, you are not required to read every single edition if you want to keep up with things, since they also have searchable rules databases, so you can just input the card you have a question about and expect the computer to do all the hard work of searching for and spitting out the answers
Often in EDH you'll just want a 1-mana cantrip to fuel some storm or Izzet shenanigans
The heroic mechanic is awesome with fight effects since youll target a creature, obtain a heroic trigger, win the fight, and attack with a bigger creature
Calgar being able to take tokens of all sorts and turn them into cards, or turn surplus mana back into more Space Marines is pretty decent at translating his acumen for eking all available advantage into victory