Whenever a creature is dealt damage, Repercussion deals that much damage to that creature's controller.

Each player shuffles the cards from their hand into their library, then draws that many cards.

{T}: Add {W} for each enchantment you control.

At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.

When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls. {4}, {T}: Proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

Whenever a creature deals damage to you, destroy it.

As Urza's Incubator enters the battlefield, choose a creature type. Creature spells of the chosen type cost {2} less to cast.

Return all enchantment cards from your graveyard to the battlefield. (Auras with nothing to enchant remain in your graveyard.)

Fading 5 (This enchantment enters the battlefield with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.) Remove a fade counter from Parallax Wave: Exile target creature. When Parallax Wave leaves the battlefield, each player returns to the battlefield all cards they own exiled with Parallax Wave.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.