Ozolith, the Shattered Spire (Promo Pack) [March of the Machine Promos] Champs and States The Dual technique also means

The Dual technique also means that the sleeves are fully opaque regardless of which color you choose

Sacrifice another creature: Search your library for a card

sacrifice Razormane Masticore unless you discard a card

that permanent's controller mills a card

Set: Rivals of Ixalan Promos Type: Legendary Creature — Elder Dinosaur Rarity: Rare Cost: {5}{U}{U} This spell can't be countered

Ozolith, the Shattered Spire (Promo Pack) [March of the Machine Promos] Champs and States The Dual technique also meansSet: March of the Machine Promos Type: Legendary Artifact Rarity: Rare Cost: {1}{G} If one or more +1 +1 counters would be put on an artifact or creature you control, that many plus one + 1 +1 counters are put on it instead. {1}{G}, {T}: Put a +1 +1 counter on target artifact or creature you control. Activate only as a sorcery. Cycling {2}