If you would draw a card, instead reveal the top three cards of your library. Put all creature cards revealed this way into your hand and the rest on the bottom of your library in any order.

Defender
Plainscycling , islandcycling (, Discard this card: Search your library for a Plains or Island card, reveal it, put it into your hand, then shuffle your library.)

Enchant creature
Enchanted creature gets +3/-3.

When Sanity Gnawers enters the battlefield, target player discards a card at random.

At the beginning of your upkeep, choose target opponent. This turn, that player can't cast spells or activate abilities and plays with their hand revealed. You may play lands and cast spells from that player's hand this turn.

Flying, haste

Equipped creature gets +0/+2 and has vigilance.
Whenever equipped creature blocks a creature, that creature doesn't untap during its controller's next untap step.
Equip

Whenever a creature enters the battlefield under your control, if that creature is 1/1, put two +1/+1 counters on it.

Enchant creature
Enchanted creature gets +1/+1 for each creature you control.
Cycling (, Discard this card: Draw a card.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

When Singe-Mind Ogre enters the battlefield, target player reveals a card at random from their hand, then loses life equal to that card's converted mana cost.

Whenever Skyclaw Thrash attacks, flip a coin. If you win the flip, Skyclaw Thrash gets +1/+1 and gains flying until end of turn.

Gain control of target creature. Untap that creature. It gains haste until end of turn. Sacrifice it at the beginning of the next end step.

Choose one or both —
• Counter target creature spell.
• Return target creature card from your graveyard to your hand.

Return all creatures on the battlefield and all creature cards in graveyards to their owners' hands.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
Whenever a creature you control attacks alone, you may search your library for an Aura card that could enchant that creature, put it onto the battlefield attached to that creature, then shuffle your library.

Flying
Whenever Spellbound Dragon attacks, draw a card, then discard a card. Spellbound Dragon gets +X/+0 until end of turn, where X is the discarded card's converted mana cost.

This spell can't be countered.
Creature spells you control with power 5 or greater can't be countered.

Flying, first strike, vigilance, lifelink, protection from red and from green

Sacrifice Stormcaller's Boon: Creatures you control gain flying until end of turn.
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)