Target opponent puts the cards from their hand on top of their library. Search that player’s library for that many cards. The player puts those cards into their hand, then shuffles.
Flying When Sower of Temptation enters, gain control of target creature for as long as Sower of Temptation remains on the battlefield. 2/2
Constellation — Whenever Eidolon of Blossoms or another enchantment you control enters, draw a card. 2/2
{2}{R}, {T}: Create a token that’s a copy of target creature card in your graveyard, except it’s an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step. 2/3
Split second (As long as this spell is on the stack, players can’t cast spells or activate abilities that aren’t mana abilities.) Choose target card in a graveyard other than a basic land card. Search its owner’s graveyard, hand, and library for all cards with the same name as that card and exile them. Then that player shuffles.
[+1]: Until end of turn, Gideon, Ally of Zendikar becomes a 5/5 Human Soldier Ally creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn. [0]: Put a 2/2 white Knight Ally creature token onto the battlefield. [-4]: You get an emblem with "Creatures you control get +1/+1."
Take an extra turn after this one. Exile Part the Waterveil. Awaken 6—{6}{U}{U}{U} (If you cast this spell for {6}{U}{U}{U}, also put six +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It’s still a land.)
Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card. [-1]: Untap target permanent.
Look at target player’s hand. Target player discards all non-land cards in his or her hand.
Delirium — If a source you control would deal noncombat damage to a permanent or player while there are four or more card types among cards in your graveyard, it deals double that damage instead. When The Rollercrusher Ride enters, it deals X damage to each of up to X target creatures.
If a creature dying causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time. Creature tokens you control have vigilance and lifelink.
At the beginning of each end step, if an opponent lost 3 or more life this turn, you may draw a card. (Damage causes loss of life.)
Flying When Angel of Despair enters the battlefield, destroy target permanent.