Flying

Whenever Sin enters or attacks, exile a permanent card from your graveyard at random, then create a tapped token that's a copy of that card. If the exiled card is a land card, repeat this process.

When Oasis of Renewal enters and whenever a land card leaves your graveyard, seek a land card. This ability triggers only once each turn.

When Oasis of Renewal enters and whenever a nonland card leaves your graveyard, seek a nonland card. This ability triggers only once each turn.

Flying, lifelink

Spells you cast have delve. (Each card you exile from your graveyard while casting those spells pays for .)

Whenever you cast a spell, you lose life equal to its mana value.

Look at the top four cards of your library. Put two of them into your hand and the rest into your graveyard.