When youre able to attack with Etali, all bets are off because getting up to two valuable spells that you are able to cast immediately without paying their mana costs, not just draw the spells but cast them right away, is incredibly valuable and has the potential of taking over almost any game
My best tip here is, check your local machines randomly throughout the day whenever you can, you may just get lucky with a drop
Put a time counter on Out of Time for each creature that phased out this way
Its a bit pricey at 9 mana, but in formats like Commander where big mana is common, this card can completely warp the game
Virtually every deck needs to play lands to get going, but if you drop an early Cemetery Gatekeeper and exile a land (which there should be abundance of in eternal formats), then is your opponent forced into not playing lands until they find an answer