Look at the top X cards of your library, where X is one plus the number of differently named lands you control. Put up to three of them into your hand and the rest on the bottom of your library in a random order.

Create three 1/1 red and green Elemental creature tokens.

This spell costs {2} less to cast if it targets a creature you control with power 4 or greater.
Target creature you control deals damage equal to its power to target creature you don't control.

Lifelink
Whenever you gain life, noncreature spells your opponents cast cost {1} more to cast until your next turn. This ability triggers only once each turn.

Ozzen Headquarters enters tapped.
{T}: Add {W} or {B}.
{T}, Discard another card named Ozzen Headquarters: Draw a card.

Whenever you scry, each opponent loses X life and you gain X life, where X is the number of cards you looked at.
{2}{W}{B}: Scry 1.

Defender
Whenever Ozzen Surveillance Grid blocks, scry 1.

{T}: Add one mana of any color.
{1}{VP}{VP}{VP}, {T}, Sacrifice Petabyte Prism: Draw two cards.

At the beginning of your end step, if you control three or more untapped lands, you draw a card and you lose 1 life.

First strike
When Photon Collector enters, scry 2.

When Photonic Cobra dies, create a 1/1 red and green Elemental creature token.

Exile the top two cards of your library. Until the end of your next turn, you may play those cards. Cards exiled this way cost {2} less to cast if they're instants, sorceries, or Elementals.

When Player Band enters, create a 2/3 colorless Bard creature token, then attach Player Band to it.
Equipped creature gets +1/+1.
{1}, Unattach Player Band: Tap equipped creature. It gains hexproof until end of turn.
Equip {3}

Choose target nonland permanent you control and up to two target nonland permanents you don't control. Return those permanents to their owner's hands.

Possibility Heights enters tapped.
{T}: Add {R} or {G}.
{T}, Discard another card named Possibility Heights: Draw a card.

Flying
When Powerline Warbler enters, return target artifact card from your graveyard to your hand.

Flying
Whenever you cast a spell, choose one of its colors that you haven't chosen this way this turn. Add one mana of that color.

Once during each of your turns, you may cast a multicolored spell or a spell with {VP} in its mana cost from your graveyard. When you cast a spell this way, it gains “If this card would be put into a graveyard from anywhere, exile it instead.”

Flash
Whenever you cast a noncreature spell, Prismatic Pack gets +1/+1 until end of turn. Untap it.

When Prismatic Remnant enters, scry 2.

{VP}{VP}{VP}: Pristine Star gains double strike until end of turn.

As Prodigious Hater enters, look at an opponent's hand, then choose a nonland card name.
Whenever an opponent casts a spell with the chosen name, Prodigious Hater deals 3 damage to that player.

Target player discards two cards. If all the cards discarded this way share a card type, that player loses 3 life.

Flash
Ward {4}
When Psychedelic Serpent enters, gain control of target instant spell, sorcery spell, activated ability, or triggered ability. You may choose new targets for it.

Target creature gets +1/+1 and gains deathtouch until end of turn. Scry 1.