Brainstorm

Parley — When this creature enters, each player reveals the top card of their library. For each nonland card revealed this way, put a +1/+1 counter on this creature. Then each player draws a card.

Whenever a creature deals combat damage to one of your opponents, its controller may draw a card.

Target creature gets +2/+2 and gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)

Multikicker 1B (You may pay an additional 1B any number of times as you cast this spell.) Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) This creature enters with a +1/+1 counter on it for each time it was kicked.

Multikicker G (You may pay an additional G any number of times as you cast this spell.) When this creature enters, create a 2/2 green Wolf creature token for each time it was kicked.

Target creature can block any number of creatures this turn.

Will of the council — Starting with you, each player votes for time or knowledge. If time gets more votes, take an extra turn after this one. If knowledge gets more votes or the vote is tied, draw three cards.

X, Sacrifice this enchantment: Destroy each artifact, creature, and enchantment with mana value X or less.