Enchanter’s Bane

At the beginning of your end step, target enchantment deals damage equal to its mana value to its controller unless that player sacrifices it.

Feral Hydra

Feral Hydra enters with X +1/+1 counters on it.
: Put a +1/+1 counter on Feral Hydra. Any player may activate this ability.

Riddlekeeper

Whenever a creature attacks you or a planeswalker you control, that creature’s controller mills two cards.

Battle Rampart

Defender
: Target creature gains haste until end of turn.

Elite Scaleguard

When Elite Scaleguard enters, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.)
Whenever a creature you control with a +1/+1 counter on it attacks, tap target creature defending player controls.

Aim High

Untap target creature. It gets +2/+2 and gains reach until end of turn.

Arcane Flight

Enchant creature
Enchanted creature gets +1/+1 and has flying.

Elvish Vanguard

Whenever another Elf enters, put a +1/+1 counter on Elvish Vanguard.

Ambassador Oak

When Ambassador Oak enters, create a 1/1 green Elf Warrior creature token.

Ember Weaver

Reach (This creature can block creatures with flying.)
As long as you control a red permanent, Ember Weaver gets +1/+0 and has first strike.

Jalira, Master Polymorphist

, , Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

See Red

Enchant creature
Enchanted creature gets +2/+1 and has first strike.
At the beginning of your end step, if you didn’t attack with a creature this turn, sacrifice See Red.

Gift Horse

Whenever you crank Gift Horse, roll two six-sided dice. Create a number of 1/1 red Goblin creature tokens equal to the difference between those results.

Head Banger

Whenever you crank Head Banger, target creature must be blocked this turn if able.

Goblin Slingshot

Whenever you crank Goblin Slingshot, creatures you control get +2/+0 and gain trample until end of turn.

Targeting Rocket

Whenever you crank Targeting Rocket, target creature blocks this turn if able.