Rite of the Dragoncaller | Enchantment | | Whenever you cast an instant or sorcery spell, create a 5/5 red Dragon creature token with flying. | PINDURSKI
Etali, Primal Storm | Legendary Creature | Elder Dinosaur | Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs. | Raymond Swanland
Shivan Dragon | Creature | Dragon | Flying (This creature can't be blocked except by creatures with flying or reach.)
{R}: Shivan Dragon gets +1/+0 until end of turn. | Donato Giancola
Niv-Mizzet, Visionary | Legendary Creature | Dragon Wizard | Flying
You have no maximum hand size.
Whenever a source you control deals noncombat damage to an opponent, you draw that many cards. | Dan Murayama Scott
Thousand-Year Storm | Enchantment | | Whenever you cast an instant or sorcery spell, copy it for each other instant and sorcery spell you've cast before it this turn. You may choose new targets for the copies. | Dimitar Marinski