Dominaria, +=1 (21)
Flying
Whenever you cast a historic spell, scry 1. (Artifacts, legendaries, and Sagas are historic. To scry 1, look at the top card of your library, then you may put that card on the bottom.)
Kicker (You may pay an additional as you cast this spell.)
When Caligo Skin-Witch enters, if it was kicked, each opponent discards two cards.
Trample
Champion of the Flame gets +2/+2 for each Aura and Equipment attached to it.
Whenever you cast a historic spell, target player mills two cards. (Artifacts, legendaries, and Sagas are historic.)
When Ghitu Chronicler enters, if it was kicked, return target instant or sorcery card from your graveyard to your hand.
As long as there are two or more instant and/or sorcery cards in your graveyard, this creature gets +1/+0 and has haste. (It can attack and as soon as it comes under your control.)
: Add .
: You may put a land card from your hand onto the battlefield.
Whenever another Elf you control enters, put a +1/+1 counter on Marwyn, the Nurturer.
: Add an amount of equal to Marwyn's power.
, Sacrifice an artifact: Orcish Vandal deals 2 damage to any target.
Whenever Pegasus Courser attacks, another target attacking creature gains flying until end of turn.
, Sacrifice an artifact: Draw a card.
Flying, first strike
Whenever you cast a historic spell, Serra Disciple gets +1/+1 until end of turn. (Artifacts, legendaries, and Sagas are historic.)
Sacrifice a Goblin: Add .
When Skittering Surveyor enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.
When Sparring Construct dies, put a +1/+1 counter on target creature you control.
Menace (This creature can't be blocked except by two or more creatures.)
If Stronghold Confessor was kicked, it enters with two +1/+1 counters on it.
Creatures you control with power or toughness 1 or less can't be blocked.
, Sacrifice Tragic Poet: Return target enchantment card from your graveyard to your hand.
: Add . Spend this mana only to cast an instant or sorcery spell.
At the beginning of your end step, untap target artifact.
Gatherer works better in the Companion app!
(You may pay an additional as you cast this spell.)