Tyvar the Bellicose 48 (March of the Machine: The Aftermath) Riftbound League of Legends If you search your library

If you search your library this way

return this card from your graveyard to the battlefield

Whenever a creature you control enters

you may put a land card from your hand onto the battlefield tapped

Sigil of Corruption — When you lose control of Khârn the Betrayer

Tyvar the Bellicose 48 (March of the Machine: The Aftermath) Riftbound League of Legends If you search your libraryWhenever one or more Elves you control attack, they gain deathtouch until end of turn. Each creature you control has "Whenever a mana ability of this creature resolves, put a number of +1 +1 counters on it equal to the amount of mana this creature produced. This ability triggers only once each turn."