Ajani, Adversary of Tyrants [Core Set 2019 Prerelease Promos] Magic Origins building thopters is a byproduct

building thopters is a byproduct of larger construction efforts

pay {0} and exile it with three time counters on it

{B}{B}: Regenerate Skithiryx

sign it and shuffle it into target player's library

Ajani, Adversary of Tyrants [Core Set 2019 Prerelease Promos] Magic Origins building thopters is a byproductSet: Core Set 2019 Prerelease Promos Type: Legendary Planeswalker Ajani Rarity: Mythic Cost: {2}{W}{W} +1: Put a +1 +1 counter on each of up to two target creatures. 2: Return target creature card with mana value 2 or less from your graveyard to the battlefield. 7: You get an emblem with "At the beginning of your end step, create three 1 1 white Cat creature tokens with lifelink."