Dragons is life

Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate.

Whenever a creature enters the battlefield under your control, you gain 1 life.

Flying

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

At the beginning of your upkeep, you gain 1 life.

{3}, Sacrifice Fountain of Renewal: Draw a card.

Destroy target artifact or enchantment. You gain 4 life.

Enchant creature

Enchanted creature gets +2/+2.

Flying

Whenever another nontoken Dragon enters the battlefield under your control, create a 5/5 red Dragon creature token with flying.

{1}{R}: Dragons you control get +1/+0 until end of turn.

[+2]: Sarkhan, Dragonsoul deals 1 damage to each opponent and each creature your opponents control.

[−3]: Sarkhan, Dragonsoul deals 4 damage to target player or planeswalker.

[−9]: Search your library for any number of Dragon creature cards, put them onto the battlefield, then shuffle.

Flying

When Sparktongue Dragon enters the battlefield, you may pay {2}{R}. When you do, it deals 3 damage to any target.

Spit Flame deals 4 damage to target creature.

Whenever a Dragon enters the battlefield under your control, you may pay {R}. If you do, return Spit Flame from your graveyard to your hand.

Destroy target tapped creature.