The Base Set Mewtwo card is numbered 10/102, making it a rare holo from the original 1999 Wizards of the Coast print run
(7/13/2018) Because the permanent is on the battlefield both before and after it's turned face up, turning a permanent face up doesn't cause any enters-the-battlefield abilities to trigger
Create a token that's a copy of one of those creatures, except its power is equal to the total power of those creatures, its toughness is equal to the total toughness of those creatures, and it's a colorless Eldrazi creature
This is great for Voltron strategies, but also all sorts of commanders from noncombat strategies who might still care about their commander's total power.
All sets need a certain number of destruction spells in black at common, usually a mix of ones that can kill anything (unconditional) and others that are situational (conditional)
If you do, there is an additional beginning phase after this phase