You draw two cards and you lose 2 life.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
As Obelisk of Urd enters the battlefield, choose a creature type.
Creatures you control of the chosen type get +2/+2.

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.

: Rakshasa Deathdealer gets +2/+2 until end of turn.
: Regenerate Rakshasa Deathdealer.

Return X cards at random from your graveyard to your hand. Exile Reap the Past.

Untap all creatures you control and all creatures target opponent controls. You and that opponent each gain control of all creatures the other controls until end of turn. Those creatures gain haste until end of turn.

When Restoration Gearsmith enters the battlefield, return target artifact or creature card from your graveyard to your hand.

Equipped creature gets +1/+1.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flying

Flying, vigilance
: Target creature with a +1/+1 counter on it gains flying and vigilance until end of turn.

Damage can't be prevented this turn. Stomp deals 2 damage to any target.

Flying
: Sunmane Pegasus gains vigilance and lifelink until end of turn.

When Tidebinder Mage enters the battlefield, tap target red or green creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Tidebinder Mage.

Flying
Landfall — Whenever a land enters the battlefield under your control, Wave-Wing Elemental gets +2/+2 until end of turn.

Flying