That means you get two blinks for the price of one, which makes Ephemerate only cost half a mana, and thats the kind of value you just cant get normally
If a creature has vigilance, it can attack without tapping
This is because each of these permanents states that whenever a creature under their owner's control deals combat damage to a player, that card's owner draws a card
How many different art versions of Magic cards exist
And, during combat your creatures get +1 to power until end of turn, but with a full party, that becomes +3
Unfortunately, very few causal decks can actually play this, and there are loads of better options in Commander these days anyway