M:tG card similarity search
2RR · Creature — Elemental
{5}{R}{R}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When Ember Swallower becomes monstrous, each player sacrifices three lands. 4/5
| Name | Mana | Type | Text | 
|---|---|---|---|
| Epicenter | 4R | Sorcery | Target player sacrifices a land. Threshold — Each player sacrifices all lands they control instead if seven or more cards are in your graveyard. | 
| Dread Statuary | Land | {T}: Add {C}. {4}: Dread Statuary becomes a 4/2 Golem artifact creature until end of turn. It's still a land. | |
| Mana Vortex | 1UU | Enchantment | When you cast this spell, counter it unless you sacrifice a land. At the beginning of each player's upkeep, that player sacrifices a land. When there are no lands on the battlefield, sacrifice Mana Vortex. | 
| Inkmoth Nexus | Land | {T}: Add {C}. {1}: Inkmoth Nexus becomes a 1/1 Phyrexian Blinkmoth artifact creature with flying and infect until end of turn. It's still a land. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) | |
| Quirion Druid | 2G | Creature — Elf Druid | {G}, {T}: Target land becomes a 2/2 green creature that's still a land. (This effect lasts indefinitely.) 1/2 | 
| Chimeric Idol | 3 | Artifact | {0}: Tap all lands you control. Chimeric Idol becomes a 3/3 Turtle artifact creature until end of turn. | 
| A-Druid Class | 1G | Enchantment — Class | (Gain the next level as a sorcery to add its ability.) Landfall — Whenever a land enters the battlefield under your control, you gain 1 life. {2}{G}: Level 2 You may play an additional land on each of your turns. {2}{G}: Level 3 When this Class becomes level 3, target land you control becomes a creature with haste and "This creature's power and toughness are each equal to the number of lands you control." It's still a land. | 
| Druid Class | 1G | Enchantment — Class | (Gain the next level as a sorcery to add its ability.) Landfall — Whenever a land enters the battlefield under your control, you gain 1 life. {2}{G}: Level 2 You may play an additional land on each of your turns. {4}{G}: Level 3 When this Class becomes level 3, target land you control becomes a creature with haste and "This creature's power and toughness are each equal to the number of lands you control." It's still a land. | 
| Waker of the Wilds | 2GG | Creature — Merfolk Shaman | {X}{G}{G}: Put X +1/+1 counters on target land you control. That land becomes a 0/0 Elemental creature with haste. It's still a land. 3/3 | 
| Morgue Thrull | 2B | Creature — Thrull | Sacrifice Morgue Thrull: Mill three cards. 2/2 |