High end
500 cartas
T: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.
(T: Add G or U.) As this land enters, you may pay 2 life. If you don't, it enters tapped.
(T: Add U or R.) As this land enters, you may pay 2 life. If you don't, it enters tapped.
Each player discards their hand, then draws seven cards.
(T: Add B or G.) As this land enters, you may pay 2 life. If you don't, it enters tapped.
You may look at the top card of your library any time. You may play lands and cast Bird spells from the top of your library. If a land or Bird you control entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Whenever an opponent draws a card, that player may pay 2. If the player doesn't, you create a Treasure token. (It's an artifact with "T, Sacrifice this token: Add one mana of any color.")
T: Add C. T: Draw a card. Activate only if you have exactly seven cards in hand.
(T: Add W or U.) As this land enters, you may pay 2 life. If you don't, it enters tapped.
T: Add U. U, T: Untap target legendary permanent.
(T: Add W or B.) As this land enters, you may pay 2 life. If you don't, it enters tapped.
You may look at the top card of your library any time. You may play lands and cast Bird spells from the top of your library. If a land or Bird you control entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
At the beginning of each end step, if three or more creatures died this turn, this creature becomes prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)
Red creatures get +1/+1. Whenever a Mountain is tapped for mana, its controller adds an additional R.
You may look at the top card of your library any time. You may play lands and cast Bird spells from the top of your library. If a land or Bird you control entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.
As long as The Aetherspark is attached to a creature, The Aetherspark can't be attacked and has "Whenever equipped creature deals combat damage during your turn, put that many loyalty counters on The Aetherspark." +1: Attach The Aetherspark to up to one target creature you control. Put a +1/+1 counter on that creature. −5: Draw two cards. −10: Add ten mana of any one color.
This artifact enters tapped. This artifact doesn't untap during your untap step. If you would begin your turn while this artifact is tapped, you may skip that turn instead. If you do, untap this artifact. T: Take an extra turn after this one.
Indestructible T: Add B. 6B, T, Exile a creature you control: Harness The Soul Stone. (Once harnessed, its ∞ ability is active.) ∞ — At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.