Any number of target players each discard a number of cards equal to the greatest mana value among permanents you control.

Exile all permanents. For as long as any of those cards remain exiled, at the beginning of each player's upkeep, that player returns one of the exiled cards they own to the battlefield.

Destroy all creatures. They can't be regenerated. Draw a card for each creature destroyed this way.
Cycling (, Discard this card: Draw a card.)
When you cycle this card, all creatures get -2/-2 until end of turn.

Whenever an opponent casts a spell, counter that spell and put a depletion counter on this enchantment. If there are three or more depletion counters on this enchantment, sacrifice it.
Cycling (, Discard this card: Draw a card.)
When you cycle this card, you may counter target spell.

Search your library for a Dragon permanent card, put it onto the battlefield, then shuffle.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Put four +1/+1 counters on each creature you control.
Cycling (, Discard this card: Draw a card.)
When you cycle this card, you may put four +1/+1 counters on target creature.

Flying, trample
Double strike (This creature deals both first-strike and regular combat damage.)
At the beginning of your upkeep, sacrifice this creature unless you pay .
: This creature gets +1/+0 until end of turn.

Exile all artifacts, creatures, and lands from the battlefield, all cards from all graveyards, and all cards from all hands.
Cycling (, Discard this card: Draw a card.)
When you cycle this card, destroy all lands.