Volcanic Dragon

Dragonspeaker Shaman

Dragon spells you cast cost {2} less to cast.

Infuriate

Target creature gets +3/+2 until end of turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Furnace Whelp

Flying
{R}: Furnace Whelp gets +1/+0 until end of turn.

Maniacal Rage

Enchant creature
Enchanted creature gets +2/+2 and can't block.

Kargan Dragonrider

As long as you control a Dragon, Kargan Dragonrider has flying. (It can't be blocked except by creatures with flying or reach.)

Lathliss, Dragon Queen

Flying
Whenever another nontoken Dragon you control enters, create a 5/5 red Dragon creature token with flying.
{1}{R}: Dragons you control get +1/+0 until end of turn.

Goblin Motivator

{T}: Target creature gains haste until end of turn. (It can attack and {T} this turn.)

Demanding Dragon

Flying
When Demanding Dragon enters, it deals 5 damage to target opponent unless that player sacrifices a creature.