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You may look at the top card of your library any time.
You may cast Dragon spells from the top of your library.

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Create three 1/1 red Goblin Scout creature tokens with mountainwalk. (They can't be blocked as long as defending player controls a Mountain.)

When this creature enters, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.

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Draw four cards, then choose X cards in your hand and discard the rest.

When this creature enters, you take the initiative.
Whenever you cast your second spell each turn, copy it. If you've completed a dungeon, copy that spell twice instead. You may choose new targets for the copies. (A copy of a permanent spell becomes a token.)

Flying

Destroy target nonsnow creature.

, Sacrifice this creature: Create a 1/1 white Spirit creature token with flying at the beginning of the next end step.

Target opponent loses 3 life.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Starting with you, each player separates all permanents they control into three piles. Then each player chooses one of their piles at random and sacrifices those permanents. (Piles can be empty.)

Replicate (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)
Return target creature to its owner's hand.

This creature enters with a tide counter on it.
At the beginning of your upkeep, put a tide counter on this creature.
As long as there is exactly one tide counter on this creature, it gets -1/-1.
As long as there are exactly three tide counters on this creature, it gets +1/+1.
Whenever there are four or more tide counters on this creature, remove all tide counters from it.

Destroy all creatures with toughness 4 or greater.

Haste
When this creature enters, create a 1/1 white Ally creature token.

Magecraft — Whenever you cast or copy an instant or sorcery spell, choose target creature you control. Until end of turn, it gains "If this creature would leave the battlefield, exile it instead of putting it anywhere else" and "When this creature is put into exile, create a 4/4 blue and red Elemental creature token." (Each instance of that ability triggers separately.)

Flying, vigilance

Enchant land
Enchanted land has ", : Create a 2/2 green and blue Drake creature token with flying."