Put a +1/+1 counter on target creature. That creature gains reach until end of turn.

Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

Enchant creature

When Hydra's Growth enters the battlefield, put a +1/+1 counter on enchanted creature.

At the beginning of your upkeep, double the number of +1/+1 counters on enchanted creature.

Flying

Lieutenant — At the beginning of combat on your turn, if you control your commander, draw a card.

Target creature you control gets +2/+1 until end of turn. Each other creature you control gets +1/+1 until end of turn.

Destroy target creature with flying.

For each player, choose friend or foe. Each friend puts a +1/+1 counter on each creature they control. Each foe chooses one untapped creature they control, then taps the rest.

When Savannah Sage enters the battlefield, you gain 2 life.

Flying

Whenever Skyknight Vanguard attacks, create a 1/1 white Soldier creature token that's tapped and attacking.

Underworld Fires deals 1 damage to each creature and each planeswalker. If a permanent dealt damage this way would die this turn, exile it instead.

Vivien's Crocodile gets +1/+1 as long as you control a Vivien planeswalker.

For each player, choose friend or foe. Each friend creates a token that's a copy of a creature they control. Each foe returns a creature they control to its owner's hand.