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'Counter target spell.
At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.
'Destroy target nonblack creature.
At the beginning of your next upkeep, pay {2}{B}. If you don't, you lose the game.
'Until end of turn, target creature becomes a blue Serpent with base power and toughness 5/5.
'Reach, trample, protection from multicolored
This creature enters with X +1/+1 counters on it.
'Counter target spell.
At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.
'Other tapped creatures you control have deathtouch.
Other untapped creatures you control have hexproof.
{1}, {T}: Untap another target creature or land you control.
'Flash {U}, Sacrifice an Island: This creature can't be blocked this turn. {B}, Sacrifice a Swamp: You gain 1 life and draw a card. {U}{B}: Exile five target cards from...
'Target player draws X cards and loses X life, where X is the number of cards in their graveyard.
'Target player draws X cards and loses X life, where X is the number of cards in their graveyard.
'Flash {U}, Sacrifice an Island: This creature can't be blocked this turn. {B}, Sacrifice a Swamp: You gain 1 life and draw a card. {U}{B}: Exile five target cards from...
If there are three or more Lesson cards in your graveyard, you may cast this spell as though it had flash. This spell costs {1} less to cast for each...
'You may pay {B} rather than pay this spell's mana cost if there are thirteen or more creatures on the battlefield.
Each player sacrifices thirteen creatures of their choice.