Nemesis

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

If you control a Plains, you may tap an untapped creature you control rather than pay this spell's mana cost. Cast this spell only during combat. ...

Target creature can't be blocked this turn.

You may return an Island you control to its owner's hand rather than pay this spell's mana cost. Counter target spell unless its controller pays {1}.

If an opponent controls a Mountain and you control a Plains, you may cast this spell without paying its mana cost. Prevent all damage that would be...

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost. Tap all creatures.

Target creature can't attack or block this turn.

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

Cast this spell only during the declare blockers step. Attacking creatures become blocked. (This spell works on creatures that can't be blocked.)

Gain control of target creature with mana value X or less.

Target creature gets +1/-1 and gains haste until end of turn.

Until end of turn, if a player taps a nonbasic land for mana, it produces colorless mana instead of any other type.